WORLD HISTORY

Detailed explanation-1: -The immediate cause of World War I that made the aforementioned items come into play (alliances, imperialism, militarism, nationalism) was the assassination of Archduke Franz Ferdinand of Austria-Hungary. In June 1914, a Serbian-nationalist terrorist group called the Black Hand sent groups to assassinate the Archduke.

Detailed explanation-2: -Germany’s unrestricted submarine warfare strategy sent more merchant and passenger ships to the ocean’s floor and the loss of American lives mounted. The U.S. protested and in February severed diplomatic relations with Germany, while Congress appropriated funds for increased military affairs.

Detailed explanation-3: -Answer and Explanation: The main result of Germany’s use of unrestricted submarine warfare during World War l was the entry of the United States into the conflict. Submarines had been attacking the ships of neutral countries, as well as, ships that carried civilian passengers.

Detailed explanation-4: -The Lusitania. In early 1915, Germany introduced a policy of unrestricted submarine warfare in the Atlantic. The German invasion of Belgium. American loans. The reintroduction of unrestricted submarine warfare. The Zimmerman telegram. 05-Sept-2022