The Oklahoma land rush begins

On April 22, 1889, a 1.9 million-acre tract of Indian Territory for white colonial settlement in Oklahoma officially started at 12pm. From the article:

"The Oklahoma land rush begins
At precisely high noon, thousands of would-be settlers make a mad dash into the newly opened Oklahoma Territory to claim cheap land.

The nearly two million acres of land opened up to white settlement was located in Indian Territory, a large area that once encompassed much of modern-day Oklahoma. Initially considered unsuitable for white colonization, Indian Territory was thought to be an ideal place to relocate Native Americans who were removed from their traditional lands to make way for white settlement. The relocations began in 1817, and by the 1880s, Indian Territory was a new home to a variety of tribes, including the Chickasaw, Choctaw, Cherokee, Creek, Cheyenne, Commanche, and Apache.

By the 1890s, improved agricultural and ranching techniques led some white Americans to realize that the Indian Territory land could be valuable, and they pressured the U.S. government to allow white settlement in the region. In 1889, President Benjamin Harrison agreed, making the first of a long series of authorizations that eventually removed most of Indian Territory from Indian control.

To begin the process of white settlement, Harrison chose to open a 1.9 million-acre section of Indian Territory that the government had never assigned to any specific tribe. However, subsequent openings of sections that were designated to specific tribes were achieved primarily through the Dawes Severalty Act (1887), which allowed whites to settle large swaths of land that had previously been designated to specific Indian tribes.

On March 3, 1889, Harrison announced the government would open the 1.9 million-acre tract of Indian Territory for settlement precisely at noon on April 22. Anyone could join the race for the land, but no one was supposed to jump the gun. With only seven weeks to prepare, land-hungry Americans quickly began to gather around the borders of the irregular rectangle of territory. Referred to as “Boomers,” by the appointed day more than 50,000 hopefuls were living in tent cities on all four sides of the territory.

The events that day at Fort Reno on the western border were typical. At 11:50 a.m., soldiers called for everyone to form a line. When the hands of the clock reached noon, the cannon of the fort boomed, and the soldiers signaled the settlers to start. With the crack of hundreds of whips, thousands of Boomers streamed into the territory in wagons, on horseback, and on foot. All told, from 50,000 to 60,000 settlers entered the territory that day. By nightfall, they had staked thousands of claims either on town lots or quarter section farm plots. Towns like Norman, Oklahoma City, Kingfisher, and Guthrie sprang into being almost overnight.

An extraordinary display of both the pioneer spirit and the American lust for land, the first Oklahoma land rush was also plagued by greed and fraud. Cases involving “Sooners”–people who had entered the territory before the legal date and time–overloaded courts for years to come. The government attempted to operate subsequent runs with more controls, eventually adopting a lottery system to designate claims. By 1905, white Americans owned most of the land in Indian Territory. Two years later, the area once known as Indian Territory entered the Union as a part of the new state of Oklahoma."