Which event and similar incidents drew the united states into world war 1

In April 1917 the United States declared war on the Central Powers, which gave the war the global character. However, its effects would not be felt until 1918. The sinking by a German submarine of the RMS Lusitania on May 7, 1915, where 128 Americans died had generated an anti-German popular feeling among Americans, but it was the German announcement of a war submarine "without restrictions" together with the confirmation of the authenticity of the Zimmermann telegram which caused a flow of anti-German sentiments in the United States, and was the trigger for its official entry into war on the side of the allies.

each played a major role in ending the cold war.

result of the incas claiming exclusive right over numerous traditional routes, some of which had been constructed centuries earlier mostly by the wari empire