William McKinley (1843-1901) was the 25th president of the United States, serving from 1897 to 1901. His presidency was defined by protective tariffs, the adoption of the gold standard, and the Spanish-American War, which resulted in the United States acquiring Puerto Rico, Guam, and the Philippines. Assassinated in 1901, McKinley left a legacy as the president who helped transform the United States into an emerging world power at the dawn of the twentieth century.

Woodrow Wilson (1856-1924) was the 28th president of the United States, serving from 1913 to 1921. His administration established the Federal Reserve, strengthened federal regulation of business, and ultimately brought the United States into World War I, after which Wilson championed his Fourteen Points and the League of Nations. His legacy is complicated by his administration’s racial segregation, suppression of speech, and expansion of presidential power.

William H. Taft (1857-1930) was the 27th President of the United States, serving from 1909 to 1913, and later became the 10th Chief Justice of the United States Supreme Court. Taft served in several important government positions before becoming president, including Governor of the Philippines and Secretary of War. As President, Taft strengthened federal antitrust enforcement, expanded railroad regulation, and promoted American economic influence abroad through his policy of Dollar Diplomacy.

Theodore Roosevelt (1858-1919) was the 26th president of the United States. After becoming president following William McKinley’s assassination, he advanced the “Square Deal,” strengthened federal regulation of corporations and railroads, protected millions of acres of public land, and expanded America’s influence abroad. Roosevelt left a lasting legacy as one of the most influential presidents of the Progressive Era.

Warren G. Harding (1865-1923) was the 29th president of the United States, serving from 1921 until his death in 1923, and was elected on a promise to restore stability and “normalcy” after World War I. Harding promoted tax cuts, reduced government spending, business growth, immigration restrictions, and arms limitation, while his administration was overshadowed by scandals.

Calvin Coolidge (1872-1933) was the 30th President of the United States, serving from 1923 to 1929. A staunch advocate of limited government, low taxes, balanced budgets, and business growth, Coolidge became one of the leading symbols of the conservative politics of the 1920s. His legacy remains debated over the role his policies played in the economic conditions that preceded the Great Depression.