<span>The role of Mexico gave the Radical Republicans a veto-proof majority in Congress. Hope this helps :)</span>
They created tons of things, the one you are asking for would be the assembly line.
Massive retaliation means the US would respond to an attack with a larger response to annihilate the enemy.
Massive retaliation required a bigger, stronger weapon than held by an enemy. This policy forced an intense arms race which required the US to win in order to execute the plan. The use spent millions developing nuclear weapons and eventually the space program to prove they were prepared for an attack by the USSR.
The plantation system brought about the fact that many slaves were needed to help 'run' (work in) the plantations, and soon, there were more african americans than whites in certain southern states.
False genocide-the deliberate killing of a large group of people, especially those of particular ethnic group or nation.
