The answer is the Confederacy attacked Fort Sumter in South Carolina-(C)
In general, Europeans wanted luxury goods, manufactured goods, fruit and grain from "Asia," since these were considered exotic and exiting--which is why so many European sought a trade route with Asia for so long.
In 1854, the Missouri Compromise was repealed by the Kansas-Nebraska Act. Three years later the Missouri Compromise was declared unconstitutional by the Supreme Court in the Dred Scott decision, which ruled that Congress did not have the authority to prohibit slavery in the territories.
The best event to show the destruction of the natural landscape after the west was settled was when the government allocated regions in the west for the American Indians. The Indians were given land to live on for life, these are called Indian reservations.