11.

Move the strength or weakness to the correct side:
Believed they were fighting for Independence
Few factories
Larger source of volunteers
Had to defeat a large area of land
Strong Manufacturing
Railroads often did not connect
The North
The South

Believed they were fighting for Independence - Both the North and the South believed they were fighting for independence, so this cannot be categorized as a strength or weakness for either side.

Few factories - Weakness for the South, Strength for the North.

Larger source of volunteers - Strength for both the North and the South.

Had to defeat a large area of land - Weakness for the North, Strength for the South.

Strong Manufacturing - Strength for the North, Weakness for the South.

Railroads often did not connect - Weakness for both the North and the South.