Where Harriet Tubman was born?

The United States of America (also called the United States, the States, the U.S., the USA, and America), the federal constitutional republic, a union of fifty states, which also has territories and a federal district among its lands

North America (the continent which includes Mexico and ranging from Panama to the northern-most parts of Canada)

The State of Maryland, the American State located in the Mid Atlantic region of the United States, bordering Virginia, West Virginia and the District of Columbia to its south and west; Pennsylvania to its north; and Delaware to its east