The Romani (also spelled Romany or Rromani /ˈroʊməni/, /ˈrɒ-/), colloquially known as the Roma, are an Indo-Aryan ethnic group, traditionally nomadic itinerants. They live in Europe and Anatolia, and have diaspora populations located worldwide, with significant concentrations in the Americas. The Romani began to leave India about 1,000 years ago. They probably left to escape the invasion of Afghan general Mahmud of Ghazni early in the 11th century. Mahmud's troops likely pushed the Romani out of northern India and into the area that is now Pakistan, Afghanistan, and Iran.