December 7, 1941Reputable sourceWell documented
Pearl Harbor
On the timeline · around December 7, 1941 ·
What happened
Japan's surprise attack on the Pacific Fleet killed 2,400 Americans and brought the United States into World War II.
Why it matters
The end of American isolation — and the beginning of its superpower era.
Sources
- US National Park Service. Pearl Harbor National Memorial · Reputable source