The region now known as the Community of Madrid has been inhabited since the Lower Paleolithic era. During pre-Roman times, it was populated by the Carpetani, a Celtic tribe. The Romans later established several settlements, the most significant being Complutum (modern-day Alcalá de Henares). Following the fall of the Roman Empire, the area was held by the Visigoths and then incorporated into the Islamic Emirate of Córdoba in the 8th century.
In the 9th century, Emir Muhammad I ordered the construction of a small fortress named Mayrit on the banks of the Manzanares river to protect Toledo from Christian incursions. This settlement eventually became the city of Madrid. The region was conquered by Christian forces under King Alfonso VI of León and Castile in 1085. For centuries, it remained a relatively minor territory until 1561, when King Philip II moved the royal court from Toledo to Madrid, centralizing political power in the region and spurring massive demographic and architectural growth.
In the 19th and 20th centuries, the region was the epicenter of Spain's political turbulence. It was the site of the legendary Dos de Mayo Uprising against Napoleon's troops in 1808. During the Spanish Civil War (1936–1939), Madrid was fiercely defended by Republican forces before falling to the Nationalists. After the transition to democracy in the late 1970s, the Community of Madrid was officially established as an autonomous community on March 1, 1983, recognizing its unique demographic and economic status apart from the surrounding regions of Castile.
