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.
Conflict. Many of the Founding Fathers considered banning slavery in the Constitution, but those men were more concerned with keeping the union together. Those men had an opportunity to end slavery in 1787 when drafting the new Constitution, but instead chose to extend slavery by passing the Three-Fifths Compromise.