What was the effect of conquest and settlement on the total population of native civilizations?

The Native American population was reduced by as 90%

Explanation:

the native population was reduced by as much as ninety percent in the first century after first contact as the result of diseases inadvertently introduced from Europe.

“a committee reviews the bill and marks it up to make it more viable and to reflect interests 

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.