How many empires have had existed in the world?

Throughout history, there have been numerous empires, with estimates ranging from a few hundred to over a thousand, depending on definitions and categorizations. Major empires include the Roman, Ottoman, British, Persian, and Mongol empires, among many others. Each empire has significantly influenced the cultural, political, and economic landscapes of their respective regions and the world. The exact count can vary, as some empires were short-lived or less impactful than others.