Why was the defeat of vicksburg a significant loss for the confederate army

It allowed the Union Army to have total control of the Mississippi River. Hope I helped!

From the list, one way in which the Chinese Exclusion Act (1882) and the Gentlemen's Agreement (1907) were similar is that they 1. reflected nativist attitudes in the United States.  Both acts were aimed at stemming or barring East Asian migration to the United States based on racist reasoning and those nativist attitudes.