The Anglosphere, also known as the Anglo-American world, is a Western-led sphere of influence among the Anglophone countries. The core group of this sphere of influence comprises five developed countries that maintain close social, cultural, political, economic, and military ties with each other: Australia, Canada, New Zealand, the United Kingdom, and the United States. Although extended definitions do include non-Western and developing countries that were once part of the British Empire and retained English influence and common law upon independence, such as those in the Indian subcontinent, the Anglosphere is a distinct grouping that is not simply synonymous with countries in which the English language has official status.
Anglosphere countries are generally aligned with each other on global issues and collaborate extensively in matters of security, as exemplified by alliances like Five Eyes. The core countries of the Anglosphere were collectively the leading powers of the Western Bloc during the Cold War, and are either NATO members or designated by the United States as major non-NATO allies.