What has been a lasting effect of European colonization in the Americas, Asia, and Africa?

Which events are correlated but do not necessarily have a causal relationship?

How are the republican and democratic presidential candidates chosen? a. they are nominated by their state governments. b. each is nominated by his or her respective party. c. each is chosen by the governor of his or her home state. d. they are chosen by the house of representatives.

Plz , ive been stuck on this forever. what action did president jefferson take to stop britain and france from seizing american merchant ships. a. he declared war on france. b. he called for increased tariffs on british and french goods. c. he called for embargo on all foreign trade. d. he declared war on britain.