What three factors helped the United States rank highest in post-World War II new product development

The map makes it clear that after world war ii, korea was a a) part of china b) divided country c)part of japan d)unified country

(05.04 mc) how did the roman transportation system keep the empire strong? plz

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.