Please help it's for a project that was supposed to be due last week... What was Ulysses S Grant’s contribution causing the Civil War?

Grant had a great impact on the United States both in his time as a war general and in his time as president. His role in the Civil War was instrumental to the Union victory and the strategies he employed saved many union troops and ended the war quickly. Ulysses S. Grant (1822 – 1885) is famous for leading the Union Army to victory over the Confederacy during the American Civil War and for serving as the 18th President of the United States from 1869 to 1877. Grant led the Union forces to victory in many critical battles and in 1864

c. reserves power to the states and people

during the nancy. probs