What was one of the main problems with states controlling their own currency?
a.
states always had to pay the national government more money than they were able to produce.
b.
states could make their own money and assign it a specific value.
c.
paper money would only last a few months and had to be replaced.
d.
state produced currency made interstate trade easier to control.

B. States could make their own money and assign it a specific value.

Explanation:

This was the main problem with states controlling their own currency. The fact that states controlled their own currency led to them being able to make their own money and assign it a specific value. In turn, this caused great instability in the economy, as well as complicated trade. This problems were ultimately resolved by the adoption of the dollar in every state.

union blockade

explanation:

the union blockade in the american civil war was a naval strategy by the united states to prevent the confederacy from trading.

the blockade was proclaimed by president abraham lincoln in april 1861, and required the monitoring of 3,500 miles (5,600 km) of atlantic and gulf coastline, including 12 major ports, notably new orleans and mobile. those blockade runners fast enough to evade the union navy could only carry a small fraction of the supplies needed. they were operated largely by british citizens, making use of neutral ports such as havana, nassau and bermuda. the union commissioned around 500 ships, which destroyed or captured about 1,500 blockade runners over the course of the war.