Answer:
D. There was no more frontier land
Explanation:
This is the answer because the 1890 census said that the frontier region of the United States no longer existed which means there was no more frontier land.
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The Church believed that the Earth was made for people, and that it was thus at the center of the world. Galileo challenged this, and if he proved them wrong, he could challenge the authority of the church.
Slavery was prohibited in states north of the 36°36', and this line continued west until California, which was completely admitted to the Union as a free state. In turn, slavery was allowed beneath the line. Missouri, on the other hand, was allowed into the Union as a slave state. This allowed for the amount of slave and free states to stay balanced to preserve the status quo in Congress.
Credit card, it's money they don't currently have but will be able to pay for in the future
Your answer is, C, because the blockades were very effective