What is the supremacy clause? explain what this clause says and does.

The supremacy clause is included in the US Constitution and it states that the legislation enacted by the federal goverment, or the treaties that have been issued under its authority, are the supreme law instruments in the US.

For example, State courts are subject to this clause and if there is a conflict between state law and federal law, federal law always prevails and has to be applied.

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.