The correct answer is Author Zimmermann.
<span> It worked against Cambodia because a </span>communist<span> government had risen there. It supported France because it wanted to limit communism in Southeast Asia. It opposed Indochina because of the corruption of the Diem government. Hope it helped.</span>
I would say D. sorry if not.
It resulted in the national government pulling the last federal troops from the south and formally ending the reconstruction era
Before the panama canal people from East coast of America who wanted to go to Asia had to either sail around south America which took months or sail towards Asia and go around Africa which took even longer. The panama canal was a short cut right in the middle of central America which cut navigation time in half. Hope I helped. :)