World War I was rising Nazi feeling across Europe, colonial and economic rivalries, which contributed to growing international tension. The main spark that started World War I was the assassination of the Austrian archduke Franz Ferdinand in Sarajevo in June 1914. The heart of the conflict were the Central Powers, Germany and Austria-Hungary, and the Allied Powers, Britain, France, and Russia; Italy joined later in 1915, and then United States joined in 1917. World War I was the first war to be fought on land, at sea, and in the air. World War I brought more technological innovations than any conflict in history. Machine guns, battleships, land mines, barbed wire, engine-driven transport vehicles, and other products of 19th-century industrialization combined with such newer innovations as the airplane and poison gas to make killing more efficient. World War I one was a one big mess, which caused the deaths of thousands of people, world trade fell, and it gave birth to Hitler.The increased technology of World War I had greatly expanded humankind's potential for killing. World War I was the first war to use new technology such as aircraft, machine guns, poison gas, and much more. By using new technology, many people or soldiers died because it is really easy to shoot somebody using guns instead of stabbing somebody with the sword as they used to do in earlier wars. This war killed many sons, husbands, fathers all over the world. In this War of about 16,000,000 soldiers and about 13,000,000 civilians died all over the world in this war. It was hoped that this had served as a lesson to nations and that future battles could be avoided. After World War I the League of Nations was established to settle international argument peaceably like UN for United Nations.World War I also effected the economy of United States and the World economy. Stock market crashed in October 1929 in United States, and it marked the beginning of the great depressio...
