I think its D: The Red Sea
The best answer for this question would be:
C. It spread to the east
<span>The focus was on the eastern part of North America in order to match the Spanish resources of gold and silver resources. This also helped the Spaniards grow their catholic empire.</span>
The Vietnam War was fought between South Vietnam and North Vietnam. The U.S. aided South Vietnam while North Vietnam was aided by the communist Soviet Union. The war was at a stalemate for awhile even with the help of the U.S. on the South's side. The U.S. left the war due to public discontent. Two years later North Vietnam conquered South Vietnam, and they became a united nation again.
In 1792, the Federal Treasury Department determined that gold was worth FIFTEEN TIMES MORE THAN SILVER.
The Coinage Act of 1792 made gold and silver the standards for money printed in United States of America. The Act regulated the gold standard 15 times more than the value of silver.