Very classic and expensive...
Nationalism heightened in the 19th century and heading into the 20th century. The nationalistic fervor by people in Europe had them each viewing their own nations as better than the others, in competition with the others. This would lead to an increase in tension between the nations.
Imperialism expanded on that nationalistic rivalry by carrying their competition to other parts of the globe. The nations of Europe sought to grab control for themselves over parts of Asia and Africa. When war erupted, that also meant it would become a world war because the European nations would include people from their imperial territories in the war.
Militarism grew ever more potent as the 20th century opened. The competition between nations included a massive arms race in terms of expanding armies and navies. The nations also sided up in competing military alliances and made military battle plans as to how they might fight a war if war came. When a cause for war broke out, all those preparations propelled the nations of Europe into war recklessly.
Answer:
In Atlantic waters, a German U-boat launched a torpedo and sank the British liner Lusitania on May 7, 1915. 1.198 people died , including 128 Americans. The Germans followed a policy of indiscriminated attack and sinking of vessels and ships that could be transporting goods for Britain and other allies, no matter the neutrality of a third nation. The US was formally neutral still in 1915. This event outraged the American public and is considered one of the factors that pushed the USA to join the war in 1917.
Explanation:
Not all children went to school, they're clothes were sewn at home, and they had homes that were way different.
