Why is it necessary for the two superpowers to use nuclear weapons as the weapon of choice to demonstrate strength , especially during the cold war

where is the passage

i cant solve it without knowing the passage

the  equal rights amendment  (era) states: "equality  of  rights  under the law shall not be denied or abridged by the united states or by any state on account of sex." congress first introduced the era in 1923, but the campaign for ratification took off in the 1960s during the  civil rightsmovement.