Great economic depression, failure of conciliation, impact of treaty of Versailles, rise or expansion in Germany and Japan these are the causes of world war II.
Explanation:
World war II was started in Germany by Hitler. It was the year of 1939. War was declared by France and Britain just after the invasion of Poland by Germany headed by Hitler. Treaty of Versailles in 1919 was one of the cause of world war II.
World war II causes great economic loss or depression in the world. As too many countries were involved in the war and it was continuing for 2 to 3 years long it causes grest economic recession. After world war I many countries want to spread peace among the countries but every effort of conciliation was failed.
If you don't already have knowledge of the period, you might look for a timeline of key events in the 19th century. You'd find a couple things related to this question:
In the German states and elsewhere in Europe in 1848 there were a number of revolution movements, trying to replace old conservative governments. The revolutions had a more liberal flavor (wanting parliaments and such). Some also had a strong nationalist flavor -- in Germany, that meant creating a united Germany. But the revolutions failed, and many of those who wanted to see change in the German states left and went to the United States. I live in a town where many of them showed up!
As for Ireland, from 1845-1849 there was a devastating famine. Ireland had depended on the potato as its chief crop and food source. When a disease struck the potato plants, famine conditions became awful -- and governments did little to help. Many Irish people left, hoping to find new lives in America.
Answer:
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Answer: C. The Seven Years War