The answer is C. Aswan ( APEX )
One major problem the United States was suffering with when John F. Kennedy became president was HIGH UNEMPLOYMENT RATE.
The Second Indochina War (aka the Vietnam War) began as a conflict between the South Vietnamese army and government, and the communist Viet Cong. The United States publicly supported the South Vietnamese government but didn't want to join the war unless absolutely necessary.
Answer:
Increase in population and desire to search for land
I would say b. precious stones Example of commodities that have been used as mediums of exchange include gold, silver, copper, salt, peppercorns, tea, large stones (such as Rai stones), decorated belts, shells, alcohol, cigarettes, cannabis, candy, cocoa beans, cowries and barley.