Answer:
To an important extent it is true that World War II was motivated by revenge, at least in Europe.
Explanation:
Germany, the main country that caused the war, had lost World War I just two decades earlier, and that loss meant the annexation of several of its former lands by neighboring countries, and the imposition of very expensive war reparation payments, that led to many economic problems in the country.
Many Germans were angry at their situation, and Hitler took advantage of this to sell the idea of revenge, but also of outright destruction.
It's called checks and balances.
Answer:
A huge dust storm that caused dry soil to blow, creating a 'black blizzard'
