I just had this question today =D! The answer is A. The port of Boston was closed.
Answer:
The South did not secede primarily because of slavery. ... But it was not the primary reason why the South seceded. The Civil War began because of an increasing push to place protective tariffs favoring Northern business interests and every Southern household paid the price
Explanation:
Google
In the U.S., There are some powers delegated to the government only, and others that are reserved to the states. However, there are powers that both the government and the states have and can exercise simultaneously within the U.S. territory, these are called concurrent powers. The areas in which the federal govenrment and the states have concurrent power include in the power to tax, make roads, protect the environment, establish bankruptcy laws, create lower courts and regulate elections, among others.
Ships in those days depended on sails to get around. That being said, they'd usually take anywhere from 8 to 12 weeks.