I believe the answer may be D. In taking action, one must not worry about success or failure.
When President Truman took a hard line against striking workers in the years immediately following World War II, he:
"had little understanding of the plight of laborers in the post-war years."
During the first months of his administration, he became involved in a struggle between coal miners and railroad workers. It took several meetings, and fierce arguments, to get them to agree, and end the strike.
Technological advances increased profit and productivity
Answer:
The Monroe Doctrine addresses American desires to expand its territory by by stating that the American hemisphere is no longer open to European colonization.
