Vietnamization was a policy of the Richard Nixon administration to end U.S. involvement in the Vietnam War through a program to expand, equip, and train South Vietnamese forces and assign to them an ever-increasing combat role, at the same time steadily reducing the number of U.S. combat troops.
C) The Andes Mountains run north-south in western South America.
C. 'pax' means peace in latin, and 'Romana' means Roman, so it literally translates to "Roman Peace", which was a time of create peace and a time when the cultures flourished. :)