What events and actions led to the russian revolution, and what effect did the revolution have on the great war?

Which of the following is an example of the pull factor known as economic migration? a. better educational opportunities pulling people towards a new country b. mexican laborers entering the us to work in agricultural jobs c. joining family members that are already in a new country d. crop failures driving people away from their country i am unsure on this question, i was thinking b? but i could be wrong.

This map is depicting the 16th century route of what explorer? a) hernando de soto b) james oglethorpe c) sir walter raleigh d) juan ponce de leon

The baltic sea has been called a scandinavian mediterranean explain why that comparison seems logical