What four countries made up the Barbary States?

The Barbary States were comprised of four North African countries: Morocco, Algiers (part of modern-day Algeria), Tunis (Tunisia), and Tripoli (part of modern-day Libya). These states were known for their piracy and privateering in the Mediterranean Sea during the 16th to 19th centuries. They often engaged in conflicts with European powers, leading to various diplomatic and military responses.