Probably because they wanted that certain slave, or maybe the certain slave knew something personal. There could be a number of reasons.
1. The concentration of factories brought job opportunities
<span>Secretary of the Treasury Alexander Hamilton believed the government should take over the war debts of the states, and assume full responsibility for paying all of them off. He did this in part for the unity. Hamilton wanted to create a National Bank, which he would use to pay off the war debts.</span>
Because if one of the colonies is good and so do the others it will make a stronger economy