How did feelings about slavery change after the American revolution

The Revolution had contradictory effects on slavery. The northern states either abolished the institution outright or adopted gradual emancipation schemes. In the South, the Revolution severely disrupted slavery, but ultimately white Southerners succeeded in strengthening the institution.

Explanation:

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.