How did human migration most contribute to ethnic diversity in south america today ? a people came to south america from different parts of the world overtime b people left south america to go to different parts of the world overtime c people have moved throughout south america to seek better opportunity d people have moved throughout south america as a result of competition for resources .

Plz which of the following statements is the best definition of a blockade? a. a blockade is a group of soldiers recruited from a foreign country who serve for the money. b. a block it is a military tactic in which one army moves into place to face another army. c. a blockade is a wooden fence built to defend a colonial settlement. d. blockage is the shutting off of a port by ships to keep people or supplies from moving in or out.