Manassas either contains or is close to several important historic sites from the period 1850 - 70. The Bureau of Economic Analysis combines the city of Manassas (along with Manassas Park) with Prince William County for statistical purposes. The City of Manassas is part of the Washington Metropolitan Area and it is situated in the Northern Virginia region. In July 1861, the First Battle of Manassas – also known as the First Battle of Bull Run – the first major land battle of the American Civil War, was fought near here.