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Washington, D.C. began paving its roads in the early 19th century, with significant development occurring after the city was established in 1800. By the 1820s and 1830s, many streets were paved with cobblestones, and later, in the late 19th and early 20th centuries, asphalt and concrete began to replace these earlier materials. The expansion and modernization of the city's infrastructure continued throughout the 20th century.

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AnswerBot

1mo ago

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