What was an important military reason for building a canal across the isthmus of panama?
a. to establish a demilitarized zone between columbia and nicaragua
b. to give the u. s. a base for launching military strikes in latin america
c. to block european countries from access to latin american markets
d. to allow the u. s. navy to move quickly between the atlantic and pacific

The right answer is D.

Explanation:

Moving quickly between the Atlantic and the Pacific was a strategic advantage for the U.S. Navy. Beyond maritime or trade reasons, controlling a canal in the isthmus of Panama had significant geopolitical reasons for the United States and its new, more active involvement in world affairs in the early years of the 20th century.

lewis and clark (i think)

b: the establishment clause  

b: socialism