A civil war...between the Greeks :)
Answer:
chilled plow
Explanation:
James Oliver, an early industrialist in South Bend, who invented the chilled plow. Though his name is not nearly as familiar as John Deere's, James Oliver of South Bend revolutionized agriculture with his invention of a new type of plow. An 1878 advertisement for the Oliver Chilled Plow boasted: “Buy no other.
I think it is the last one, because revolutions are connected with the need for better treatment and living conditions.
A.
most of vietnam is or was forests
