Why did the us refuse to ratify the treaty of versailles

How did the instition of slavery continue to affect the world even after it was abolished?

Historians are concerned with the accuracy of their writings and readings but are also aware of the inability of authors to know every angle of every story biases, perspectives, beliefs, and a variety of other differences history being told by one person at a time no one being totally accurate, as hard as we try really need on this, and you^^

Brainliesttt ! : ) -global military, political, and psychological responses to terrorism?