Which two of the following were strategies used by the Union during the Civil War?

(4 points)
Responses

naval blockade
naval blockade - this question requires at least 2 answers

defensive war
defensive war - this question requires at least 2 answers

seizing control of the Mississippi River
seizing control of the Mississippi River - this question requires at least 2 answers

relying on European countries for supplies

The two strategies used by the Union during the Civil War were:

1. Naval blockade
2. Seizing control of the Mississippi River