The nullify means to make something valid? true or false?

Why didn’t the united states participate in the league of nations? the u.s. senate did not want the country to join. president wilson did not want the country to join. the league of nations was only for european countries. the league of nations had failed to prevent world war 1

According to campbell, why did the british take control of oudh?

How did the united states obtained the purchase of floridia to extand its frontiers to the pacific ocean