How do historians know that the bering strait land bridge froze and allowed for the migration into north america?
a.
it’s a theory that is not supported by any concrete evidence.
c.
scientists have found carvings of early civilizations in rocks that have been underwater for thousands of years.
b.
radiocarbon dating of materials in the surrounding area supports the idea.
d.
historians have discovered documents written by these migrants that support facts about their arrival to north america.

1of the following choices, which one best describes one way that christianity came to east africa? a. christians traveled in caravans through the sahara desert and introduced the people of mali to a new religion. b. christian traders from the mediterranean interacted with the people of axum. c. christian military from west africa traveled across the continent to bring their religion to the people of east africa. d. christian rulers from asia traveled to east africa to bring their religion to the people. 2 which trade item from outside the region did west africans need most? a. gold b. camels c. salt d. iron

Which number identifies the guyot? a. 1 b. 2 c. 3 d. 4 e. 5 f. 6

Which is the best location for farming? ( southwest asia ) a: east of the jordan river b: central syria c: southern israel d: the coast of lebanon