Ulysses S. Grant was the most acclaimed Union general during the American Civil War and was twice elected President. Grant began his military career as a cadet at the United States Military Academy at West Point in 1839. After graduation he went on to serve with distinction as a lieutenant in the Mexican–American War.
The Northern economy benefited from development in many of its industries, including textile and iron production. The war also stimulated the growth of railroads, improving transportation infrastructure.