221 BCE — Qin Shi Huang orders the construction of the Great Wall

The self-proclaimed First Emperor of China, Qin Shi Huang is one of the most important figures in Chinese history. Under his leadership, massive reforms to the legal and economic systems took place – and, not incidentally, numerous scholars and writers were outlawed or executed, and their books burned. He also decreed vast infrastructure projects, including a massive program of road-building, and the creation of the Great Wall of China.

Huang was not responsible for the entire wall, but rather, for the construction of links between pre-existing sections and extending the ends of the them. The project was a long one, and would be completed for centuries, but it sure kept thousands of peasants to busy to rebel for generations at a time, and may have even served some defensive purpose (which is usually considered to be the reason for its construction).

March 30, 1963 — The last streetcars of Los Angeles make their final runs

Like most other cities the world over, Los Angeles moved away from the inflexibility of light rail public transportation after the Second World War. An increasing emphasis on car ownership gripped the West, leading to booms in freeway construction, service station openings and closures of all sorts of rail lines, light and heavy. Most of the light rail lines of Los Angeles were replaced by bus routes – often, the lines were purchased by bus companies with the express intention of doing so.

The last of the Red Cars – those operated by the Pacific Electric company – ran on the Los Angeles to Long Beach line until April 9, 1961. The last of the Yellow Cars ran almost two years longer, before the last service on the J, P, R, S and V routes on March 30. All of these were replaced by bus lines on March 31, 1963. It was the end of an era.

LARy W line - 1407 at Marmion Way.jpg
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As mentioned in:

The Great Wall — Dead Kennedys