Who benefited most from the columbian exchange, native americans or europeans?

Which would make the best heading for this list of notes about the migration of african-americans during the reconstruction era?

Meaning “restructuring,” reduced government control and the soviet union move away from a totalitarian government. a) glasnost b) detente c) perestroike d) democracy

What are the media and the press sometimes referred to as? a.the fourth estateb.the sixth branchc.the mouthpiece of the governmentd. the first estate