The main reason why policymakers in the Johnson administration wanted to continue U.S. involvement in Vietnam is because they wanted to justify the commitment of the US to the conflict--a commitment that had cost thousands of lives in an effort to contain communism.
The Americas are the big answer here. They held other holdings in other places as well.
These are mud bricks, thatched with straw, grass, or hay. The dirt bricks are packed tight, then set out in the sun to harden into a brick.
Answer:
oh I was not good in history
The middle of a see-saw, opposing forces cancel each other out.