How long did the Concorde take to make?

The Concorde took approximately 10 years to develop, with its design phase starting in the early 1960s. The project was a collaboration between British Aircraft Corporation and Aérospatiale of France, and the first prototype was completed in 1967. After extensive testing, the Concorde entered service in 1976. Its development faced various technological, financial, and regulatory challenges, contributing to the lengthy timeline.