How did the number of factories in the north affect the civil war

1) 7 states had seceded from the U. S. and would eventually form the Confederate States of America, electing their own president and estsblishing their own military.

2) President Lincoln sent thousands of troops to stop the Confederate forces, causing 4 more states to secede from the Union

The North and many factories than the South.

Explanation:

This allowed the North to keep its army well supplied at the start of the Civil War and during its duration.