I Don't see any multiple choice answers but i'm going to take a gander and guess that the answer you are looking for is "<u>Coal</u>"
Answer:
KBR is a global provider of comprehensive solutions for aerospace and defense, energy and chemicals, intel and data science, and federal and civilian markets.
<span>I think all the choices are correct. Because when you say history it talks about the lifestyle of the people including clothing, farming, conflicts to other countries, etc. It's where we find out about the lives of the people whether they are ordinary or famous. History educates us, it tells us about how they live their lives in the past.</span>
The idea was to train the South Vietnamese army to be able to handle the Vietnam armies themselves, <span>reducing the number of U.S. soldiers in Vietnam </span>