Answer:
Through a revolution
Explanation:
Napoleon's invasion of Spain (1807-1808) provided the spark the rebels needed. Napoleon, seeking to expand his empire, attacked and defeated Spain, and he put his elder brother Joseph on the Spanish throne. This act made for a perfect excuse for secession,<u><em> and by the time Spain had gotten rid of Joseph in 1813 most of their former colonies had declared themselves independent.</em></u>
<u><em>Spain fought valiantly to hold on to its rich colonies.</em></u>
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Mao Zedong was born on December 26, 1893
Scientists like Einstein, Bethe, Fermi, Teller, and Bloch emigrated from "Germany" in order to escape persecution and pursue scientific research, since this took place during the rise of the Nazi Party, which was highly anti-Semitic.
Answer: B. The crowding of people in tenements and slums.
Further detail:
The Industrial Revolution had its beginning in Great Britain, and eventually spread from there. Once the United States became involved, especially in the "Second Industrial Revolution" years (1870-1914), the size and resources of the country allowed the US to become a bigger industrial power than the nations of Europe.
Industrialization also led to the phenomenon of <u>urbanization</u> -- the movement of people away from the rural countryside and into cities. That led to other issues, like sanitation and crime problems in cities. So sanitation and health measures were enacted, and the first police forces were formed.
The overcrowding conditions also meant poor living conditions in tenements and slums. The condition of these sorts of neighborhoods was documented by Jacob Riis, a police reporter in New York. In 1888, Riis took pictures of what life was like in New York City's slums. Using his own photos as well as photos gathered from other photographers, Riis began to give lectures titled, "The Other Half: How It Lives and Dies in New York," in which he would show the pictures on a projection screen and describe for viewers what the situations were like. He gave his lectures in New York City churches. In 1989, a magazine article by Riis (based on his lectures) was published in <em>Scribner's Magazine</em>. The book version was then published in 1890 as <em>How the Other Half Lives: Studies among the Tenements of New York</em>. Riis blamed the poor living conditions on greed and neglect from society's wealthier classes, and called on society to remedy the situation as a moral obligation.