America before Columbus

00:02:22 are surrounded by pristine waters

00:05:44 ldeas are moving forward.

00:09:55 where the Missouri, lllinois and Mississippi rivers merge

00:12:59 Yet the greatest American empire of them all

00:16:41 But their wool is a true blessing.

00:19:36 NARRATOR: Not only does burning create lush grassland

00:24:54 which changed them

00:29:34 live in the Amazon

00:33:25 or of their disappearance.

00:36:13 and it's really possible that just natural climate change

00:40:53 posts and roof panels, ax handles and cart wheels.

00:44:29 trying to gain royal support to finance his voyage.

00:49:46 lt is vast.

00:53:20 inhabited by millions of people...

00:57:57 A healthy sow can give birth to ten piglets at a time.

01:02:02 to the Americas in the 16th century.

01:04:29 on the ships back to Spain.

01:09:26 than gold and silver.

01:12:24 An infinite, accessible source of the raw material of the age.

01:16:15 and make of it a true New England.

01:19:44 Most trees were cut down and turned into pasture and gardens

01:24:40 there is an unprecedented population explosion in Europe

01:27:53 imported slaves from west Africa

149:03:01 in the New world