Why did the USSR place weapons in Cuba?

What did the committees of correspondence do ? a) . all of these b). communicated c). contacted foreign government d). planned for actions the colonies took together

How was the storming of the bastille important to the french revolutiona) it forced the king to accept the people's demands for justice. b) it marked the official beginning of the french revolution. c) it compelled the government to treat people with respect. d) it exposed the french soldier's lazy attitudes and weak skills. e) it symbolized the constitutional monarchy.

When conducting research for forming a hypothesis, which practice should historians follow?