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.
During the Constitutional Convention of 1787 there were three major points that caused great debate among the constitutional convention delegates. These debates were over representation in the legislative branch, slavery, and the growing rifts between the federalist and the antifederalist delegates.