Answer:
Massive influx of influx of homesteaders, ranchers, and miners swelled
Explanation:
The West frontiers were initially opened in order to attract as many immigrants as possible to occupy the land that exist In United States.
By the end of the 18th century, the influx of homesteaders, ranchers, and miners far surpassed the amount of land and job opportunities that's available in the Western Frontier.
So, the government decided to close it before the regions became overpopulated and people forced to do crimes because they couldn't find sources of income.
Answer:
Lacking an effective opposition, the Democratic-Republicans split into groups after the 1824 presidential election; one faction supported President John Quincy Adams, while the other faction backed General Andrew Jackson.
Explanation:
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Global warming "<span>B. threatens polar ecosystems". All the other answers are false, especially answer A. There is a lot that can be done to stop global warming, such as reducing energy consumption.</span>
