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| 7297345987 | Maya collapse/decline | increasing population(5 million people- area smaller than Colorado- could not move away if there was a natural disaster), scarce resources- fighting between kingdoms over resources, kings wanted to continue wars, build monuments, and rule over each other- making themselves more wealthy | 0 | |
| 7297345988 | Easter Island collapse/decline | Chiefs focused on warring and monuments instead of the future, completely used up resources/environment- no trees (making room for monuments) or large animals in 1700s | 1 | |
| 7297347646 | New Zealand (Mauri) collapse/decline | overhunting of animals, leading to extinction: 20 bird species died out (killed over 160,000 giant moa birds- tame and easy to hunt), hunted mammals like seals and sea lions to extinction, then hunted smaller animals, then farmed (40 percent of forest cover ruined- caused deforestation) | 2 | |
| 7297350723 | One other example of humans overusing natural resources: Indus River Valley | depleted of nutrients | 3 | |
| 7297417179 | Polynesian sea-faring technology | -etak: navigating seas with just stars and waves -double-hulled canoes: more stable | 4 | |
| 7297436126 | Dhows | red sea and indian ocean, between 600 BC and 600 AD created by Arabs or Indians, long and slim hulls, carry heavy items |  | 5 |
| 7297460230 | Caravels | Portugese, West African coast and into Atlantic, used by Prince Henry, etc. for exploration |  | 6 |
| 7297460231 | Galleons | Spanish ships with metals from the Americas, can hold large amounts of items, could hold slaves |  | 7 |
| 7297461565 | Viking ships | slender and flexible, many types, made by overlapping planks being riveted together, had merchant ships and warships, some could cross oceans (first to reach Americas) |  | 8 |
| 7297462566 | Columbus ships | fairly small, only around 90 people on voyages, only 3 ships taken on Columbus's voyage to the Americas | 9 | |
| 7297463416 | Zheng He (Chinese) ships | very large, thousands of people on voyages, several hundred feet in length, traveled in Indian Ocean | 10 | |
| 7297463417 | China | created first compass | 11 |
