How was the institution of slavery defended States’ Right doctrine?

The United States Constitution implicitly permitted slavery, while the “three-fifths clause” boosted the congressional delegations and Electoral College votes of the slave states. Federal law guaranteed the return of fugitive slaves to their masters.

Explanation:

wait history, who want to talk about history, boring.

ww1 weapons: tank. tanks were used for the first time in the first world war at the battle of the somme. they were developed to cope with the conditions on the western front. the first tank was called 'little willie' and needed a crew of 3.