Which two groups of immigrants made the construction of the transcontinental railroad possible?

The Indians and the pilgrims

Hope this helps

The answer is Irish and the Chinese

Explanation:

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.