In the early and mid-19th century, industry in the united states expanded greatly in part to

Westward Expansion generally had negative effects on the Native Americans. Native Americans were forced to live on reservations. The buffalo, an important resource, experienced rapid population decline. Military conflict between Whites and Native Americans resulted in many deaths.

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It's D.increased immigration in industrial areas.

Explanation: In USAtestprep

- three-quarters or two-thirds..

- "the constitution provides that an amendment may be proposed either by the congress with a two-thirds majority vote in both the house of representatives and the senate or by a constitutional convention called for by two-thirds of the state legislatures."

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in the 1950s, country music came into its own before rock-n-roll took off in the 60s while jazz and classical music continued to innovate