The time between 1467 and 1568 is known as the period of the Warring States because it is the time period when the Daimyos took the power from the Emperor. Rivals often fought over territory.
The answer to this question is b
Another crucial development was the use of a steel frame instead of stone or brick, otherwise the walls on the lower floors on a tall building would be too thick to be practical. ... Further developments led to the world's first skyscraper<span>, the ten-story Home Insurance Building in Chicago, </span>built<span> in 1884–1885.</span>
The correct answer is B) a Seminole Alliance with the Spanish.
<em>The reason that most contributed to white settlers desire to have the Seminoles removed from Florida was a Seminole Alliance with the Spanish.
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In 1817 white settlers wanted their land back from the Seminoles. This was the reason of the first war of three. Andrew Jackson attacked the Spanish Florida territories and force the Indians to go back to the south of the Florida Peninsula. On the second war, the United States troops capture Chief Osceola –the leader of the Seminoles- in October 1837, when they wanted a truce with the government. Finally, after the third war in May 1858, the United States declared the end of the conflict with the Seminoles.