Great Lakes the size of the United Kingdom, while the surface area of the entire basin (the lakes and the land they drain) is about the size of the UK and France combined. Lake Michigan is the only one of the Great Lakes that is located entirely within the United States; the others form a water boundary between the United States and Canada. The lakes are divided among the jurisdictions of the Canadian province of Ontario and the U.S. states of Michigan, Wisconsin, Minnesota, Illinois, Indiana, Ohio, Pennsylvania, and New York. Both Ontario and Michigan include in their boundaries portions of four
Mainland invasion of the United States the U.S. economy, such as efforts to devalue the dollar or corner trade markets to isolate the United States, are currently considered another method by which a foreign power may seek to attack the United States. Many experts have considered the United States to be entirely uninvadable, because of the country's major industries, reliable and fast supply lines, large geographical size, population size, difficult regional features, and strong military force. For example, the deserts in the Southwestern United States and the Great Lakes in the Midwestern United States insulate the major U.S. population centers from threats of invasion. An invasion