Michelle Corey, C.N.W.C., F.M.C., is a Wellness Recovery Expert, researcher and author of The Thyroid Cure â The Functional Mind-Body Approach to Reversing Your Autoimmune Condition and Reclaiming Your Health! Michelle healed herself of Hashimotoâs and lupus and has been free of symptoms and antibodies since 2009.
At it's most expansive, the Roman Empire was about 5 million square kilometers (2 million square miles). The United States is far larger, at 9.8 million square kilometers (3.8 million square miles).
Largest empires by land areaEdit. For context, note that the total land area of the Earth is 148,940,000 km2 (57,500,000 sq mi). This is a list of empires whose greatest extent exceeded 2% of that area.