One possible explanation for past climate changes is the movement of earth's Continents .
In December 1978, Vietnamese troops fought their way into Cambodia. They captured Phnom Penh on January 7, 1979. ... In 1982, the Khmer Rouge formed a coalition with Prince Sihanouk, who was exiled in China after the Cambodian Civil War, and the non-communist leader Son Sann to create the Triparty Coalition Government.
<span>Many battles were fought to control rivers that were vital to transportation.
</span>
The answer for your geometry problem is 110°
