Answer:
Tiwanaku is a ruined ancient city near Lake Titicaca in western Bolivia.
Explanation:
We (as in 2016) cannot use the land bridge because of the melting of the glaciers. Back then the glaciers were still in one piece and the sea levels were much lower than now. This allowed the early people to cross the bearing straight.
Federalism characterizes the difference.
The effects of manufacturing and capital on the U.S. economy were profoundly intense. As soon as the Industrial Revolution spread to the US from Britain, US GDP rose dramatically and millions more people were put to work in factories--lifting the middle class.
