By 1968, the number of U. S. troops in Vietnam: A. was less than in 1965.
B. was decreasing as the peace process accelerated.
C. exceeded half a million as the war became more brutal.
D. was reduced, as President Johnson considered running for another term.
E. was of little concern to most Americans.

4 copper and gold, the california gold rush is why im pretty sure.

the correct answer option is: weapons.

explanation:

tensions rose as the two opposing superpowers competed for 'weapons'.

referring to the cold war (1945-1991), the two superpowers, usa and ussr, experienced a phase of struggle and conflict with each other. these two superpowers considered each other as a threat to their survival and thus opted for policies to strengthen their positions.

the two superpowers never went to war with each other directly but competed for weapons to preserve their positions.