During the one hundred years following the original treaties between the US government and American Indian tribes, treaties a. were no longer sought.
b. successfully prevented conflict.
c. were broken or ignored by many.
d. were successfully attempted.

answer: wait what

explanation:

explanation:

the addition to geographic boundaries that might have  kept the people of the huang river civilization from traveling to far distance region is that they had learned about the other river valley civilizations but feared contact would bring invasion.

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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.