How do our identities and perspectives shape the way we understand history?

The study of history

Explanation:

because it  aims to develop understanding of and skills in ... our identity, our society and our world in order to inform how we might act to shape of the 20th century on our way of life ,values and culture. investigate how history  and reasoned account of the past that takes account of different perspectives.

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.

determination