Answer:
The Alps.
Explanation:
Hannibal crossed the Alps when he marched to Rome in the Second Punic War. He caught the Romans off guard.
Because of the needed help in bargaining for higher wages and better working conditions.
During the Holocaust<span>, the creation of </span>ghettos<span> was a key step in the </span>Nazi process of separating, persecuting, and ultimately destroying Europe's Jews..Ghettos were<span> set up to segregate Jews from the rest of the population.</span>.