Final answer:
The answer Longstreet did not attribute to Lee's success is 'D) Superior resources and military equipment' as the Confederates were disadvantaged in terms of resources and equipment compared to the Union.
Step-by-step explanation:
The correct answer to the question on what Longstreet did not attribute to Lee's success is D) Superior resources and military equipment. This choice is incorrect because, despite having other advantages, the Confederacy lacked the superior resources and military equipment when compared to the Union. Their strengths included Lee's strategic brilliance and tactical acumen, highly disciplined and motivated Confederate troops, and an effective use of terrain and defensive positions. These factors, alongside the ability to wage a defensive war, shorter supply lines, and the resources of the Upper South states, all contributed to the Confederacy's ability to maintain the struggle despite the overwhelming material advantages of the North. However, the Confederate navy was not strong, and thus, lacking in comparison to the Union's naval power.