Final answer:
General Robert E. Lee was able to prolong the life of the Confederacy by taking command of the Confederate army, planning strategic attacks, and strengthening defenses.
Step-by-step explanation:
After the Battle of Hampton Roads, General Robert E. Lee was able to prolong the life of the Confederacy by taking command of the Confederate army and implementing strategic plans. While Union General McClellan waited for better conditions, Lee used the time to plan his attack, organize his army, and strengthen the defenses of Richmond. He also sought to launch successful campaigns outside of Virginia, such as in Maryland, to threaten Washington and potentially secure victory for the Confederacy.