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  1. Urban planning | Definition, History, Examples, Importance, & Facts ...

    Nov 21, 2025 · Urban planning, design and regulation of the uses of space that focus on the physical form, economic functions, and social impacts of the urban environment and on the location of …

  2. Tulsa race massacre of 1921 - Encyclopedia Britannica

    Nov 24, 2025 · It occurred in Tulsa, Oklahoma, beginning on May 31, 1921, and lasting for two days. The massacre left somewhere between 30 and 300 people dead, mostly African Americans, and …

  3. Tulsa | History, Massacre, Population, Map, & Facts | Britannica

    Dec 13, 2025 · Tulsa, city, Osage and Tulsa counties, seat of Tulsa county, northeastern Oklahoma, situated on the Arkansas River. It originated in 1836 as a settlement of Creek Indians who named it …

  4. Black Wall Street | Byname, Greenwood, Map, & History | Britannica

    Dec 6, 2025 · Black Wall Street was a prosperous neighborhood (officially named Greenwood) in Tulsa, Oklahoma, where African Americans had created a flourishing and self-sufficient business district in …

  5. Urban planning - City Design, Infrastructure, Sustainability | Britannica

    Nov 21, 2025 · Urban planning - City Design, Infrastructure, Sustainability: As Western industrial cities rapidly expanded during the first part of the 20th century, factories encroached upon residential …

  6. Oklahoma | Geography, History, Capital, Map, Population, & Facts ...

    3 days ago · Most of Oklahoma’s lakes and reservoirs are man-made, having been created through the damming of rivers and streams for the purposes of flood control, the generation of hydroelectric …

  7. Urbanization | Definition, History, Examples, & Facts | Britannica

    Nov 30, 2025 · Urbanization, the process by which large numbers of people become permanently concentrated in relatively small areas, forming cities. Whatever the numerical definition of an ‘urban …

  8. List of U.S. Cities | Britannica

    This is a list of selected cities, towns, and other populated places in the United States, ordered alphabetically by state. (See also city and urban planning.)

  9. Urban planning - Competing Models | Britannica

    Nov 21, 2025 · Starting in the 20th century, a number of urban planning theories came into prominence and, depending on their popularity and longevity, influenced the appearance and experience of the …

  10. Urban planning - Design, Development, Sustainability | Britannica

    Nov 21, 2025 · Urban planning - Design, Development, Sustainability: Although certain goals of planning, such as protection of the environment, remain important, emphases among the various …