The Anglo-Afghan Treaty of 1919 is signed. It establishes peaceful relations between Afghanistan and the UK, and confirms the Durand line as the mutual border. In return, the UK is no longer obligated to subsidize the Afghan government.

The Anglo-Afghan Treaty of 1919, also known as the Treaty of Rawalpindi, was a bilateral treaty which brought the Third Anglo-Afghan War to an end.This is regarded as the largest peace treaty since the Treaty of Versailles, which was enacted in the same year.