1420s
From Wikipedia, the free encyclopedia
| Centuries: | 14th Century - 15th century - 16th century |
| Decades: | 1390s 1400s 1410s - 1420s - 1430s 1440s 1450s |
| Years: | 1420 1421 1422 1423 1424 1425 1426 1427 1428 1429 |
[edit] Events and Trends
According to one theory, China sends out its vast navy to explore the world, discovers America 70 years before Columbus, Australia and New Zealand 350 years before Cook. The Empire then enters an isolationist period for four centuries, destroying or forgetting most of its knowledge of the voyages.
