United States government in the context of Office of War Information

Since the 19th century, the United States government has participated and interfered, both overtly and covertly, in the replacement of many foreign governments. In the latter half of the 19th century, the U.S. government initiated actions for regime change mainly in Latin America and the southwest Pacific, including the Spanish–American and Philippine–American wars. At the onset of the 20th century, the United States shaped or installed governments in many countries around the world, including neighbors Hawaii, Panama, Honduras, Nicaragua, Mexico, Haiti, and the Dominican Republic.

During World War II, the U.S. helped overthrow many Nazi German or Imperial Japanese puppet regimes. Examples include regimes in the Philippines, Korea, East China, and parts of Europe. United States forces, together with the United Kingdom and Soviet Union, were also instrumental in collapsing Adolf Hitler's government in Germany and deposing Benito Mussolini in Italy.

The Indian removal was the United States government's policy of ethnic cleansing through the forced displacement of self-governing tribes of American Indians from their ancestral homelands in the eastern United States to lands west of the Mississippi River—specifically, to a designated Indian Territory (roughly, present-day Oklahoma), which many scholars have labeled a genocide. The Indian Removal Act of 1830, the key law which authorized the removal of Native tribes, was signed into law by United States president Andrew Jackson on May 28, 1830. Although Jackson took a hard line on Indian removal, the law was primarily enforced during the Martin Van Buren administration, 1837 to 1841. After the enactment of the Act, approximately 60,000 members of the Cherokee, Muscogee (Creek), Seminole, Chickasaw, and Choctaw nations (including thousands of their black slaves) were forcibly removed from their ancestral homelands, with thousands dying during the Trail of Tears.

Indian removal, a popular policy among incoming settlers, was a consequence of actions first by the European colonists and then later on by the American settlers in the nation during the thirteen colonies and then after the revolution, in the United States of America also until the mid-20th century.

Cabinda (formerly called Portuguese Congo, Kongo: Kabinda) is an exclave and province of Angola, a status that has been disputed by several political organizations in the territory. The capital city is also called Cabinda, known locally as Tchiowa, Tsiowa or Kiowa. The province is divided into four municipalities—Belize, Buco-Zau, Cabinda and Cacongo.

Modern Cabinda is the result of a fusion of three kingdoms: N'Goyo, Loango and Kakongo. It has an area of 7,290 km (2,810 sq mi) and a population of 716,076 at the 2014 census; the latest official estimate (as at mid-2019) is 824,143. According to 1988 United States government statistics, the total population of the province was 147,200, with a near even split between rural and urban populations. At one point an estimated one third of Cabindans were refugees living in the Democratic Republic of the Congo; however, after the 2007 peace agreement, refugees started returning to their homes.

Johnson Creek is a 25-mile (40 km) tributary of the Willamette River in the Portland metropolitan area of the U.S. state of Oregon. Part of the drainage basin of the Columbia River, its catchment consists of 54 square miles (140 km) of mostly urban land occupied by about 180,000 people as of 2012. Passing through the cities of Gresham, Portland, and Milwaukie, the creek flows generally west from the foothills of the Cascade Range through sediments deposited by glacial floods on a substrate of basalt. Though polluted, it is free-flowing along its main stem and provides habitat for salmon and other migrating fish.

Prior to European settlement, the watershed was heavily forested and was used by Native Americans of the Chinook band for fishing and hunting. In the 19th century, non-Native American settlers cleared much of the land for farming, and the stream is named for one of these newcomers, William Johnson, who in 1846 built a water-powered sawmill along the creek. By the early 20th century, a rail line parallel to the stream encouraged further residential and commercial development. As urban density increased in the floodplain, seasonal floods grew more damaging. In the 1930s the Works Progress Administration of the federal government lined the lower 15 miles (24 km) of Johnson Creek with rock to control the floods. Despite this, the creek flooded 37 times between 1941 and 2006. Since the 1990s, regional planners have tried to reduce flooding by controlling stormwater runoff, creating stream meanders, reducing erosion, replacing impervious surfaces, and protecting riparian buffers.

The Institute for Defense Analyses (IDA) is an American non-profit corporation that administers three federally funded research and development centers (FFRDCs) – the Systems and Analyses Center (SAC), the Science and Technology Policy Institute (STPI), and the Center for Communications and Computing (C&C) – to assist the United States government in addressing national security issues, particularly those requiring scientific and technical expertise. It is headquartered in Alexandria, Virginia.

The Trail of Tears was the forced displacement and ethnic cleansing of about 60,000 Native Americans of the "Five Civilized Tribes", including their black slaves, between 1830 and 1850 by the United States government.

As part of Indian removal, members of the Cherokee, Muscogee, Seminole, Chickasaw, and Choctaw nations were forcibly removed from their ancestral homelands in the Southeastern United States to newly designated Indian Territory west of the Mississippi River after the passage of the Indian Removal Act in 1830. The Cherokee removal in 1838 was the last forced removal east of the Mississippi and was brought on by the discovery of gold near Dahlonega, Georgia, in 1828, resulting in the Georgia Gold Rush. The relocated peoples suffered from exposure, disease, and starvation while en route to their newly designated Indian reserve. Thousands died from disease before reaching their destinations or shortly after. A variety of scholars have classified the Trail of Tears as an example of the genocide of Native Americans; others categorize it as ethnic cleansing.

Cabinda (formerly called Portuguese Congo, Kongo: Kabinda) is an exclave and province of Angola, a status that has been disputed by several political organizations in the territory. The capital city is also called Cabinda, known locally as Tchiowa, Tsiowa or Kiowa. The province is divided into four municipalities—Belize, Buco-Zau, Cabinda and Cacongo.

Modern Cabinda is the result of a fusion of three kingdoms: N'Goyo, Loango and Kakongo. It has an area of 7,290 km (2,810 sq mi) and a population of 903,370 at the 2024 census. According to 1988 United States government statistics, the total population of the province was 147,200, with a near even split between rural and urban populations. At one point an estimated one third of Cabindans were refugees living in the Democratic Republic of the Congo; however, after the 2007 peace agreement, refugees started returning to their homes.