How did the union army gain control of Richmond?

The Union Army gained control of Richmond, Virginia, during the Civil War primarily through a series of strategic military campaigns and battles. The fall of Petersburg in April 1865, after a prolonged siege, cut off Confederate supply lines and led to the evacuation of Richmond. Union General Ulysses S. Grant's forces advanced into the city, capturing it on April 3, 1865. This marked a significant turning point in the war, contributing to the eventual surrender of Confederate General Robert E. Lee.