D) the great plains is the answer I believe to be correct. I feel the great plains needed this help.
Answer:
The Answer is Unprecedented presidential control of U.S. military forces
Explanation:
Congress gave LBJ the ability to take all necessary measures to protect U.S interests in Vietnam in the Tonkin Gulf Resolution. This led to the build-up of U.S forces in Vietnam because LBJ wanted to expand operations in Vietnam.
<span>It showed that the Union's 3-way plan might succeed.</span>
Self made steel tycoon and philanthropist, Andrew Carnegie was one of the wealthiest men in the 19th century, a business man who donated toward the new York public library. I assume that answers the question?.