the presidential veto of the Freedmen's Bureau Bill
Explanation:
Freedmen's Bureau bill was first introduced after the civil war in 1865 during the presidentship of Abraham Lincoln, to support the former slaves with food, housing, and assistance. However, after the assassination of Lincoln, Andrew Johnson became president and when the bill was introduced for extending its tenure, he vetoed against it by questioning financial burden and leniency towards the Confederate prisoners.
It was a four-way race election. Woodrow Wilson (democratic), Theodore Roosevelt (Progressive), William Howard Taft (Republican), and Eugene V. Debs (Socialist) ran against each other.