Answer:
The allies did not stop fascist aggression in the 1930's because the liberal progressives of that era underestimated the danger. They wanted a stronger Germany to act as a buffer between the Soviet Union and the rest of Europe.
Exp
Peisistratus was the first Athenian tyrant if that is what you are looking for
Answer:
the 1980s
Explanation:
Computers went on the market in 1977, and cultural lag created the shifting of computers to the 1980s
Petersburg is really crucial for the victory because it's the main point for the Confederate's supply line.
By winning the war of Petersburg, the union managed to cut off food and ammo supplies for other soldiers in another battlefront which eventually caused the Confederate army to start falling like dominos.