Star Carr occupation
8770-8460 BC
Olmec florescence
1500-400 BC
Chaco florescence
1030-1090 AD,
Chaco colapse
1120 AD
Machu Picchu occupation
1438-1560 AD
Inca empire and Spanish invasion
1438-1532 AD
Virginia City boom period
1860-1880 AD
Kennewick Man
1990s (8,500 years old)
L' Anse Aux Meadows
980 - 1020 AD