How can a physical map explain the historical development of a country

What group has historically made up the largest portion of immigrants in mexico?

Which statement explains what upwelling causes? a. upwelling causes tides to rise and fall. b. upwelling causes changes in the direction of currents. c. upwelling causes nutrients, minerals, and tiny organisms to rise. d. upwelling causes currents in the pacific ocean to change direction. i think the answer is c.

In the 1400s, portugal’s economy was based on a. industry b. exports c. finance d. trade