Neptune's windy atmosphere in August 1989. The ice giant Neptune was the first planet located through mathematical predictions rather than through regular observations of the sky.
well slavery was an big issue because it separated the northern and southern states. the northern states realize that slavery was an unnessary inhumane treatment and wanted to abolished it. While the southern states depended on slaves since they worked for free on their plantation. To resolve this they counted 3 free men for 5 slaves until 1808.
The controversy arose because a proposed state constitution, which had been drafted in the territorial capital of Lecompton, would have made slavery legal in the new state of Kansas. 1  And, in the decades before the Civil War, the issue of whether slavery would be legal in new states was perhaps the most intensely debated issue in America.