WORLD HISTORY

Detailed explanation-1: -The five consequences of World War I is that it brought ruin and destruction to Europe, European economies collapsed, Europe lost almost an entire generation of young men, nationalism surged in the colonial empires, and conflicts from the Treaty of Versailles were unresolved.

Detailed explanation-2: -Artillery. Artillery was the most destructive weapon on the Western Front. Guns could rain down high explosive shells, shrapnel and poison gas on the enemy and heavy fire could destroy troop concentrations, wire, and fortified positions. Artillery was often the key to successful operations.

Detailed explanation-3: -Which most affected the course and outcome of World War I? American military and financial intervention in the war.

Detailed explanation-4: -The H-class submarines, the majority of the submarines, served on the west coast while H-2 served in the Caribbean. The last boat of the class, H-9, was commissioned after the war. In the Atlantic, the D-class submarines served off New York and Connecticut.