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| 9459982372 | Over farming | Mesopotamians grew too much in the Fertile Crescent and now the land has run out of nutrients | 0 | |
| 9459982373 | Over grazing | pastoralists allowed their animals to eat too much grass and the grass can't regrow | 1 | |
| 9459982374 | Maize | staple crop of ancient MesoAmerica Makes good arepas and corn bread. | 2 | |
| 9459982375 | Tiger and Euphrates | the rivers had unpredictable floods so the Sumerians built canals and dams to try to dame it | 3 | |
| 9459982376 | Mesopotamia | the area in between the two rivers | 4 | |
| 9459982377 | Fertile Crescent | the area of rich farming surrounding the area of the two rivers in the Middle East extending to the Mediterranean Sea | 5 | |
| 9459982378 | Sahara | North Africa once had rich grass land that became a dry desert and as the desert expanded it pushed people north to the Mediterranean and south towards the tropical equator. | 6 | |
| 9459982379 | Nile River | this river had predictable flooding which allowed for rich farming on its banks by early settlers | 7 | |
| 9459982380 | Desertification | grass land becomes desert | 8 | |
| 9459982381 | Indus River Valley | in modern day Pakistan the people in Harapa and Mohenjo Daro had excellent trade systems and great cities with sewers on the river banks but they all disappeared | 9 | |
| 9459982382 | Huang He or Yellow River | connects China's major Northern Cities | 10 | |
| 9459982383 | Chiang Jiang or Yangtze River | China's largest river in the south that allows for great rice growing thanks to fertile yellow silt deposits | 11 | |
| 9459982384 | Loess | fertile yellow silt deposits | 12 | |
| 9459982385 | MesoAmerica | between North and South America is where Olmec started | 13 | |
| 9459982386 | Oceania and Polynesia | See the line where the sky meets the sea It calls them because during the Ice Age the distances between these islands were smaller yet some agriculturalists migrated to these islands where they know how far they can go because they other islands remained hunter-gatherers | 14 | |
| 9459982387 | Qanat | the Persians developed a method of creating irrigation canals through mountains to bring water to farms and cities | 15 | |
| 9459982388 | Apennine Mountains | running down the spine of Italy these mountains were less rugged than the mountains of Greece and allowed the Romans to develop good farms and trade | 16 | |
| 9459982389 | Etruscans | They had fantastic metal tools and great at building with stones also conquered the Latins of central Italy | 17 | |
| 9459982390 | Rome | 15 miles up the Tiber River which empties in the Tyrrhenian Sea this was a great site with 7 hills for Romulus and Remus to build a city | 18 | |
| 9459982391 | Catapults and siege weapons | developed by ancient civilizations to destroy the walls of cities they were invading | 19 | |
| 9459982392 | Stirrups | with this invention large domesticated animals could carry soldiers more steadily and traders over longer distances | 20 | |
| 9459982393 | Slash and burn | clear out the forests and grass by setting it all on fire and then plant your sides on the fertile ground | 21 | |
| 9459982394 | Constantinople | massive city between Europe and Asia where overland trade through the two continents has been happening for centuries its name comes from the Roman emperor who moved his capital to the city of Byzantium and allowed Christianity in the empire | 22 | |
| 9459982395 | Bosporus Strait | a piece of water between Asia and Europe where the modern city of Istanbul is one either side | 23 | |
| 9459982396 | Malaria | The Bantus might have brought this parasitic disease into sub-Sarah Africa when they were migrating South and East which causes fevers chills and death for those who lack immunity to it | 24 | |
| 9459982397 | Bananas | Indonesians introduced this nutrient rich food to Sub-Sahara Africa when they settled in Madagascar which created a population spike | 25 | |
| 9459982398 | Monsoon winds | they are predictable and carry a lot of rain in the summer and dry colds in the winter and in the summer you can use them to sail from Africa all the way to China and then sail back in the other direction during the winter | 26 | |
| 9459982399 | Lateen sails | with this technology I can transport my ship even when the winds are against me | 27 | |
| 9459982400 | Viking long ships | Nordic warriors developed something larger but similar to trireme which can sail across deep ocean waters and still sail up river | 28 | |
| 9459982401 | Fiefs | I grant you control of this piece of land but your you owe your allegiance to me | 29 | |
| 9459982453 | Three field system | 30 | ||
| 9459982402 | Horse collar | cows and oxen are awesome but these pack animals are leaner faster and more agile but you can't use the same technology on them | 31 | |
| 9459982403 | Black Death | the fleas the rats the people god throughout history this illness has been carried throughout Europe and Asia usually starting in Asia thanks to the Silk Road | 32 | |
| 9459982404 | Little Ice Age | it was a time of unusually cold winters especially in Northern Europe that caused a lot of famine | 33 | |
| 9459982405 | Gobi Desert | this natural feature kept China safe from Western invasions throughout its history | 34 | |
| 9459982406 | Yurt | your cities may be nice but my massive Mongolian tent made out of sheepskin can go anywhere | 35 | |
| 9459982407 | Cahokia | a massive settlement near St. Louis built by the mound builders of the Mississippi cultures | 36 | |
| 9459982408 | Tenochtitlan | upon this island in the middle of swampy lake the Aztecs built their great capital | 37 | |
| 9459982409 | Chinampas | the Aztecs brought up mud from the bottom of the lake and created rows of rich soil for farming | 38 | |
| 9459982410 | Cuzco | He's the sovereign of the nation He's the hippest cat in creation He's the alpha the omega, a to z And this perfect world will spin Around his every little whim Beause this perfect world begins and ends with this capital of the Incas in the mountains of Peru | 39 | |
| 9459982411 | Carpa Nan | a massive system of road ways built with human labor by the Incas making it easier to govern their empire | 40 | |
| 9459982412 | Ferdinand Magellan | on his voyage his survivors found a way to sail all around the world marking the first time man could do that. | 41 | |
| 9459982413 | Vasco Da Gama | was the first European to sail around Africa and into India creating a direct trade route between Western Europe into the Indian Ocean trade network | 42 | |
| 9459982414 | Caravel | these Portuguese designed ships were designed for long ocean going voyages | 43 | |
| 9459982415 | Smallpox | leaves disfiguring scars on people's skins since the times of mummies and death rates were high especially among children many Europeans have developed an immunity to them but the people of the Americas had not and it wiped out millions of Native Americans paving the way for conquest by the Europeans | 44 | |
| 9459982416 | Potosi | the Spanish found the world's largest silver mine and enslaved the local Natives to mine it for them the silver would be traded as far away as China and Japan | 45 | |
| 9459982417 | Galleons | large ships later used by the Europeans to transport goods and people along the Columbian Exchange routes | 46 | |
| 9459982418 | Sugarcane | a cash crop brought by Europeans to the New World it was very labor intensive which created a need for slaves to be brought in from Africa to the New World | 47 | |
| 9459982419 | Northwest Passage | a belief by France and England that there was a water passage around North America to Asia | 48 | |
| 9459982420 | Columbian Exchange | the goods peoples foods and illnesses from the Old World of Eurasia and Africa to the New World of North and South America | 49 | |
| 9459982421 | Strait of Hormuz | between Iran and Iraq is this body of water if one controls this body of water then they control trade into the Persian Gulf and many cities in the Middle East | 50 | |
| 9459982422 | Spinning jenny | a machine able to produce cloth with the power of one worker which was able to produce 8 to 10 times the amount of cloth done by a woman working from home | 51 | |
| 9459982423 | Water frame | a machine that as an advancement on the spinning jenny which produced more cloth using a water wheel | 52 | |
| 9459982424 | Interchangeable parts | a complex machine can be assembled using separately made pieces which are each made to precisely fit with one another and each piece is replaceable | 53 | |
| 9459982425 | Steam engine | an upgrade over water power it would use burning coal to move a piston | 54 | |
| 9459982426 | Steam ship | using a steam engine to power a water wheel ships were no longer forced to go where the wind or river currents allowed them to go | 55 | |
| 9459982427 | Crop rotation | instead of not growing in a certain field to allow it to rest and recover its nutrients you instead grow different groups over a years time which use different nutrients allowing you to always use the soil | 56 | |
| 9459982428 | Seed drill | a machine pulled by horse or oxen and later powered by fossil fuel which would place multiple seeds into a field instead of by hand one at a time | 57 | |
| 9459982429 | Transcontinental railroad | now both coasts of the United States are connected overland and people goods and ideas can cross the country | 58 | |
| 9459982430 | Second industrial revolution | with steel being stronger than iron and oil being more efficient fuel than coal we have reached a new age of larger stronger buildings, machines that go further and faster, and factories that can make more precise equipment | 59 | |
| 9459982431 | Tran-Siberian Railroad | now Russia finally has quicker access to its vast lands and resources in East Asia | 60 | |
| 9459982432 | Monocultures | farmers in colonies were encouraged or coerced into growing only one crop for the sake of making the most money but this made them vulnerable to illness and pests and famine | 61 | |
| 9459982433 | Quinine | it was developed to fight off malaria without this the Europeans would never have been able to settle and colonize Africa | 62 | |
| 9459982434 | Suez Canal | the French built a canal in Egypt that connects the Mediterranean Sea and the Indian Ocean | 63 | |
| 9459982435 | Poison gas | it was design to kill people in the trenches of WW1 a mask was developed to stop it but the masks occasionally failed or sometimes soldiers were not quick enough to put them on | 64 | |
| 9459982436 | Machine guns | whatever happens we have got the maxim gun and they have not unless this WW1 and everybody has these things which are capable of easily killing hundreds of people in a field | 65 | |
| 9459982437 | Tanks | designed to go over no mans land carrying troops | 66 | |
| 9459982438 | U-boats and Submarines | designed to secretly attack ships from under the sea nothing was better take it from me | 67 | |
| 9459982439 | Airplanes | with these soldiers can scout above their enemy during WW1 and someday maybe even transport people and items quickly through the air | 68 | |
| 9459982440 | Trench warfare | dig a hole to avoid the maxim guns then dig another to get closer to your friends then dig more holes to reach your supplies then keep digging till you have created places to live and hang out for the next 5 years of WW1 | 69 | |
| 9459982441 | Spanish Flu Pandemic | after WW1 soldiers in Europe came home with an influenza that killed millions of people | 70 | |
| 9459982442 | Long March | Mao and his last remaining communists were chased into the mountains of China as they fought off the Kuomintang | 71 | |
| 9459982443 | Sudetenland | anywhere there were Germans Hitler wanted to take the land and add them to Germany this particular land he was allowed to keep in the Munich Agreement | 72 | |
| 9459982444 | Smallpox | WHO claims this disease no longer exists but throughout history it would leave disfiguring scars on people's skins since the times of mummies and death rates were high especially among children | 73 | |
| 9459982445 | Polio | paralyzing illness contracted through contaminated body fluids Salk found vaccine and then Sabin created oral vaccine | 74 | |
| 9459982446 | Diabetes | the disease of kings in which your organs are no longer properly processing insulin and fail | 75 | |
| 9459982447 | Favelas | thanks to unplanned rapid urbanization these slums or shantytowns which were usually exclusive to Brasil are now more commonly seen in other parts of the world | 76 | |
| 9459982448 | Thee Gorges Dam | The Yangtze shall flood no more you can keep your loess and your fresh water because now China have to be a build an even bigger project to bring water north to the cities | 77 | |
| 9459982449 | Green Revolution | in the 1940's the population of the world was exploding and people were going to die but thanks to developments in chemistry biology and genetics we are able to grow more food in more places than ever before | 78 | |
| 9459982450 | Genetically Modified Organisms | corn is not suppose to be yellow nor that sweet but thanks to GMO we can change the genes of plants and animals (students coming soon) to make higher AP scores I mean more food | 79 | |
| 9459982451 | Kyoto Protocol | the developed nations of the world have decided that they must reduce their consumption of fossil fuels to reduce their carbon footprint | 80 |
