What did people at the time think would happen if congress outlawed slavery for the hole nation?

Which is the best example of a primary source ducument useful in the study of history ?

How did the cleveland massacre impact standard oil in 1872? standard oil hired all the laborers who were nearly killed during the cleveland massacre. standard oil became a monopoly in the cleveland oil market after the cleveland massacre. standard oil was bought out by other companies in the city after the cleveland massacre. standard oil closed down to avoid additional violence in the wake of the cleveland massacre.

How are isolationism and nativism related ? in the 1920s what actions did americans take that reveal their distrust of others