A is the answer explantion
<span> Although the skyrocketing urban populations strained public school systems, schools educated everyone from the children of urban professionals to the children of immigrant workers and the very poor. Some cities, including Boston, New York, Chicago, and San Francisco, even provided free secondary schools.</span>
Answer:
To strengthen the central government.
Explanation:
The federalists argued that the Articles of Confederation weakened the Congress of its power and sovereignity. Though Congress was endowed with numerous powers on paper, in reality the Articles rendered no real power to the Congress.
This was seen as a major threat by the federalists so they demanded for a new charter called The Constitution to strengthen the central government/Congress. The federalists finally concluded the Constitutional Convention of 1787 and a the US Constitution was drafted.
I think it was mercantilism but I also think it was the triangle trading system