Answer: The event that triggered war came at Fort Sumter in Charleston Bay on April 12, 1861. Claiming this United States fort as their own, the Confederate army on that day opened fire on the federal garrison and forced it to lower the American flag in surrender.
The Exxon Valdez was the oil tanker that caused one of the worst oil spills in history. It spilled nearly 11 million gallons of oil, injuring over 28 species of wildlife. It lead to the use and building of double-hulled ships.