Growing trade with Asia prompted the United States to intervene in the Pacific?

Crusade in the Pacific - 1951 The Future Asia and the United

States 1-26 was released on:

USA: 1951

the answer would be:

b. race

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.