Terms : Hide Images
| 7297346551 | Maya collapse/decline | -too many farmers on too little land -trees cleared for fuel, which caused erosion -erosion caused acidic soils to run downward, ruining agriculture -deforestation messed up water cycle (man-made drought) -population growth outstripped available resources | 0 | |
| 7297348322 | Easter Island collapse/decline | -used up all of their resources in many long, hard wars and in monument building -no trees or large animals remained -used human hair and bones to make fish hooks, ropes, textiles, and fishnets | 1 | |
| 7297386698 | New Zealand collapse/decline | -caused 20 different bird species to die out -more than 160,000 moa birds killed -depleted seal and sea lion populations -targeted small animals until they had to rely on farming -destroyed 40% of forest | 2 | |
| 7297399062 | Caral collapse/decline | increasing population gave rise to food and space, therefore overfarming | 3 | |
| 7297425414 | Polynesian sea faring techniques/technology | -double-hulled canoes -etak |  | 4 |
| 7297440956 | Seafaring technologies | -dhows -caravels -viking ships -chinese junk -galleons | 5 | |
| 7297449156 | dhows | Arab sailing vessels with triangular sails |  | 6 |
| 7297450699 | caravels | Stronger and faster ships able to make Trans-Atlantic voyage |  | 7 |
| 7297451698 | viking ships | marine vessels used in Viking Age -could easily travel in rivers |  | 8 |
| 7297454580 | chinese junks | Sails could travel into the wind and had a rudder to steer |  | 9 |
| 7297455631 | galleons | Large, heavily armed ships used to carry silver from New World colonies to Spain |  | 10 |
| 7297468356 | etak | Traditional Polynesian system of navigation that uses the stars, clouds, waves, and bird flight patterns to steer on sea voyages | 11 | |
| 7297468357 | compass | -invented in China -a device that is used to find direction by means of a needle that always points north |  | 12 |
| 7297469926 | monsoon winds | seasonal winds in South Asia blowing northeast in spring and early summer and southwest in fall and winter, and to the heavy seasonal rains they bring | 13 |
