What is the biggest event that caused the US to enter WW||?

Submarine warfare in the Atlantic kept tensions high, and Germany’s sinking of the British ocean liner Lusitania on May 7, 1915, killed more than 120 U.S. citizens and provoked outrage in the U.S. In 1917, Germany’s attacks on American ships and its attempts to meddle in U.S.-Mexican relations drew the U.S. into the war on the side of the Allies. The United States declared war on Germany on April 6, 1917.

Explanation:

answer: there were new carvings etched into the back of the sculpture and each shoulder was turned into a symbol of the birdman.

answer; cattle ranching on the savanna,and forestry in the amazon;