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.
Answer:
From 1821 to 1846, as more and more traders took their goods over the Santa Fe Trail, it became an international commercial highway used by Mexican and American traders. The 900-mile trail connected Old Franklin, Missouri to Santa Fe and was the lifeline linking the New Mexico Territory to the eastern United States.
Fort Sumter. April 12, 1861