Answer:
World War one started on the 28th of July 1914 between two sides; The war started mainly because of four aspects: Militarism, Alliances, Imperialism and Nationalism. The overall cause of World War was the assassination of Archduke. As you can see Nationalism had made a big dent in Countries
Explanation:
The answer to your second question is D.) Welfare
1.They disguised as men and went to war
2.They became Nurses,office work and factory workers
