Answer:
So they have different names for different thing
The Muslims studied ancient texts
In 2009 very little rain fell during the summer monsoon in India. In some areas rainfall was half of what is typical during the wet season and farmers could not plant their crops. Over half of India's population works in agriculture, and monsoon rains directly affect their incomes and livelihood.
Hope that helps. <3
The fact that Germany invaded France if your talking about the First World War
If your talking about the second it was because Germany invaded Poland and Britain had an alliance with Poland promising to protect it.