What attack caused the United States to enter the war?

Pearl Harbor attack
Pearl Harbor attack, (December 7, 1941), surprise aerial attack on the U.S. naval base at Pearl Harbor on Oahu Island, Hawaii, by the Japanese that precipitated the entry of the United States into World War II. The strike climaxed a decade of worsening relations between the United States and Japan.

Why did America go to war with Vietnam?

The U.S. entered the Vietnam War in an attempt to prevent the spread of communism, but foreign policy, economic interests, national fears, and geopolitical strategies also played major roles. Learn why a country that had been barely known to most Americans came to define an era.

What was the United States immediate reaction to the attack on Pearl Harbor?

The attack on Pearl Harbor left more than 2,400 Americans dead and shocked the nation, sending shockwaves of fear and anger from the West Coast to the East. The following day, President Franklin D. Roosevelt addressed Congress, asking them to declare war on Japan, which they did by an almost-unanimous vote.

When did United States enter World war I?

1917
On April 2, 1917, President Woodrow Wilson went before a joint session of Congress to request a declaration of war against Germany.

How did the Vietnam War begin?

The Gulf of Tonkin Incident, also known as the U.S.S. Maddox incident, marked the formal entry of the United States into the Vietnam War. “In the summer of 1964 the Johnson administration was laying secret plans for an expansion of U.S. military involvement in Vietnam.

When did America leave the Vietnam War?

March 29, 1973
On March 29, 1973, the last U.S. military unit left Vietnam. By that time the communists and South Vietnamese were already engaged in what journalists labeled the “postwar war.” Both sides alleged, more or less accurately, that the other side was continuously violating the terms of the peace agreements.

Was America attacked in ww2?

The only attack on a mainland American military site during World War II occurred on June 21, 1942, on the Oregon coastline. After trailing American fishing vessels to bypass minefields, the Japanese submarine I-25 made its way to the mouth of the Columbia River.