Timeline of America

Definition: Placeholder

The timeline we use - When, where, why and how homo sapiens first came to and settled in what we now call the United States and what preceded their arrival is fascinating. Scientists are rapidly developing answers. Below is a timeline of the major events we refer to in these websites with links to articles about them. In pre-written-history, dates are hotly debated among scientists. For our purposes of writing this website and keeping dates simple, we will use an "assumed date" somewhere within the range of the debate for a given event.

#	Event	Dates	Assumed date	Links
1	Beginning of the Universe	13.798 billion years		Big Bang
2	Planet Earth formed	4.54 billion years		Earth
3	First mammals	225 million to 167 million		Mammal
4	Pangea	Broke-up 200 million years		Pangea
5	North America Continent separated from Eurasia portion of prior Pangea	Somewhere between 145-66 million years		North America
6	First Saber Tooth Cat (tiger)	42 million years		Saber Tooth Cat
7	First anatomically modern humans	300,000 years		Human
8	First behaviorally modern humans	100,000
9	First humans in America Short theory Long theory	15,000 to 17,000 years ago 21,000 to 40,000 years ago	15,000 years ago	Settlement of the Americas
10	Last Saber Tooth Cat (tiger) in North America	10,000 years ago
11	Cahokia - an enormous mound city near St. Louis	Begin - 600 A.D. End - Early 16th Century		Cahokia
12	Formation of the Iroquois League	1450 - 1600 A.D.		Iroquois
13	Pocahontas married John Rolfe	April 5, 1614		Pocahontas
14	Daniel Boone & family settle in Missouri	1799		Daniel Boone
15	First two nodes of Internet connected	October 29, 1969		Internet