Answer:
A. Hills
Explanation:
Boston was expanded my leveling their hills and using the soils to fill marshes and wetlands, effectively making new land.
Answer: The early 20th century was an era of business expansion and progressive reform in the United States. The progressives, as they called themselves, worked to make American society a better and safer place in which to live. They tried to make big business more responsible through regulations of various kinds. They worked to clean up corrupt city governments, to improve working conditions in factories, and to better living conditions for those who lived in slum areas, a large number of whom were recent immigrants from Southern and Eastern Europe.
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Changes: Constitutional end to slavery and granted citizenship and voting rights.
Continuities: Blacks continued to work on plantation lands doing much the same work as before 1865. They were segregated from whites and often were not given the right to vote.
A
Explanation: The appeal of Jackson to the ordinary man helped lead to the new period known as "the common man era." As president, Andrew Jackson embraced the role of protecting "common men"—his decisions in matters such as the rotation of office holders can be argued as being in their interest.