[President Wilson and his secretary, Joseph P. Tumulty in automobile at the Brooklyn Navy Yard, May 11, after the solemn funeral service held over the bodies of the 17 sailors and marines who fell at Vera Cruz]

The automobile was first invented and perfected in Germany and France in the late 1890s. Americans quickly came to dominate the automotive industry after WWI. Throughout this initial era, the development of automotive technology was rapid. Hundreds of small manufacturers competing to gain the world's attention. Key developments included the electric ignition system, independent suspension, and four-wheel brakes. Transmissions and throttle controls were widely adopted and safety glass also made its debut. Henry Ford perfected mass-production techniques, and Ford, General Motors, and Chrysler emerged as the “Big Three” auto companies by the 1920s. Car manufacturers received enormous orders from the military during World War II, and afterward automobile production in the United States, Europe, and Japan soared.

Thomas Woodrow Wilson (December 28, 1856 – February 3, 1924) was an American politician and academic who served as the 28th President of the United States from 1913 to 1921. Wilson earned a PhD in political science at Johns Hopkins University, served as a professor and scholar at various institutions, as President of Princeton University. In 1910 he was elected the 34th Governor of New Jersey, serving from 1911 to 1913. He became the first Southerner elected as president since Zachary Taylor in 1848. He became the first Democrat since Andrew Jackson elected to two consecutive terms. He oversaw the passage of progressive legislative policies unparalleled until the New Deal in 1933. Upon the outbreak of World War I in 1914, Wilson maintained a policy of neutrality and his second term was dominated by American entry into World War I. During the war, Wilson focused on diplomacy and financial considerations, leaving military strategy to the generals, especially General John J. Pershing. Loaning billions of dollars to Britain, France, and other Allies, the United States aided their finance of the war effort. Following years of advocacy for suffrage on the state level, in 1918 he endorsed the Nineteenth Amendment, whose ratification in 1920 provided an equal right to vote for women. Early in 1918, he issued his principles for peace, the Fourteen Points, and in 1919 he traveled to Paris, promoting the formation of a League of Nations, concluding the Treaty of Versailles. A devoted Presbyterian, Wilson infused morality into his internationalism, an ideology now referred to as "Wilsonian"—an activist foreign policy calling on the nation to promote global democracy. For his sponsorship of the League of Nations, Wilson was awarded the 1919 Nobel Peace Prize, the second of three sitting presidents so honored. "Sometimes people call me an idealist. Well, that is the way I know I am an American. America is the only idealistic nation in the world."

The United States Marine Corps traces its roots to the Continental Marines of the American Revolutionary War, formed by a resolution of the Second Continental Congress on 10 November 1775. That date is celebrated as the Marine Corps's birthday. Throughout the late 19th and 20th centuries, Marine detachments served aboard Navy cruisers, battleships, and aircraft carriers. About 600,000 Americans served in the U.S. Marine Corps in World War II, performed a central role in the Pacific War. The Pacific theatre battles saw fierce fighting between Marines and the Imperial Japanese Army. The Battle of Iwo Jima was arguably the most famous Marine engagement of the war with high losses of 26,000 American casualties and 22,000 Japanese. By the end of WWII, the Corps expanded totaling about 485,000 Marines. Nearly 87,000 Marines were casualties during World War II (including nearly 20,000 killed), and 82 were awarded the Medal of Honor. The Korean War saw the Corps expand from 75,000 regulars to a force of 261,000 Marines, mostly reservists. 30,544 Marines were killed or wounded during the war. During Vietnam War Marines evacuated Saigon. Vietnam was the longest war for Marines. By its end, 13,091 had been killed in action, 51,392 had been wounded. Marines participated in the failed 1980 Iran hostage rescue attempt, the invasion of Grenada, the invasion of Panama. On 23 October 1983, the Marine headquarters building in Beirut, Lebanon, was bombed, causing the highest peacetime losses to the Corps in its history. 220 Marines and 21 other service members were killed. Marines liberated Kuwait during the Persian Gulf War, participated in combat operations in Somalia (1992–1995), and took part in the evacuation of American citizens from the US Embassy in Tirana, Albania. Following the attacks on 11 September 2001, Marine Corps, alongside the other military services, has engaged in global operations around the world in support of War on Terror. Marines were among first sent to Afghanistan in November 2001. Since then, Marine battalions and squadrons have been engaging Taliban and Al-Qaeda forces. U.S. Marines also served in the Iraq War.