By 1880, Standard Oil controlled about 90% of the U. S. oil refineries. Standard Oil was said to have had a

a countries leader should be motivated by the common good of the country.

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.

the exclusive possession or control of the supply or trade in a commodity or service.