Answer:
because during stone age people use to live in forest and caves.
they use to wear animal's skin and hunt animals for food
Brittany, Croatia, Moravia, and Bohemia
Hope this helps!
B. Russia backed out of the war.
The Treaty of Brest-Litovsky signified Russia's exit from the War. In November of 1917 Russia was having its own problems. During this time the Russian government was being overthrown and a communist regime being implemented by Lenin.
The great depression started when banks gave out risky loans where people invested the money they got into the stock market; when the stock market crashed everyone lost their money. It all ended when the president at the time make a ton of programs to bring jobs into America and help people if they did not have a job.