The berginia land mass was visible to people because of a. sudden mass migration b. ice age c. heat wave d all of the above

What effect did john hay’s open door policy letters have on the imperial powers of britain, france, germany, russia, and japan? a. it provoked the imperial powers to declare war on the united states. b. it caused the imperial powers to restrict trade in their trade with china. c. it warned the imperial powers that the united states would soon declare war on china. d. it signaled to those powers that the united states would take a larger role in world affairs than before.

As the result of a conflict between british troops and a colonial militia in massachusetts

Who were the people that migrated south into india and indus valley