Selection bias
is a kind of error that occurs when the researcher decides who is going to be studied.
Answer:
Adaption to the land and its resources
Explanation:
migrants and their descendants pushed south and east, adapting as they went.
Answer:
Capitalism.
Explanation: Last time someone tried anything else, Russia ended up with Lenin, and China got Mao Zhedong. I'll take my flipping chances with this mess of a country any day.
One hundred years after Haiti gained independence, its government could be best described as unstable and inneficient.
