All the following were strengths of the confederacy except
the ability to wage a defensive war
shorter supply lines
the resources of the upper south states
a strong navy

I'd say the first one. The ability to wage a defensive war.

"a shortage of traditional labor created new opportunities in the workplace. a major cause of the internment of japanese americans during world war ii was. racial prejudice. in the early 1940's, the "destroyers-for-military-bases deal" with great britain and the lend-lease act were evidence that the united states."

the united states began searching for a way to reduce oil

-agarvated