The term "Great Empire" often refers to powerful and influential states that have expanded their territories and cultures across vast regions. Examples include the Roman Empire, known for its advanced engineering and governance, and the Mongol Empire, which became the largest contiguous empire in history through military conquests. Great Empires typically exhibit strong central leadership, a well-organized military, and effective trade networks. They often leave lasting legacies in art, architecture, and law, influencing future civilizations. The rise and fall of these empires can provide insights into the dynamics of power, culture, and human interaction throughout history.