Who is the most important American who was never president?

The abolitionist movement's most powerful voice, and adviser to Lincoln.

Led enslaved people to freedom on the Underground Railroad and scouted for the Union Army.

Industrialised invention itself and electrified American cities.

Organised the suffrage campaign that eventually produced the Nineteenth Amendment.

The moving assembly line put cars, and mass production, within ordinary reach.

Turned the role of First Lady into a political office and chaired the human rights commission at the UN.

Chief Justice for thirty-four years, and the man who made the Supreme Court a real branch of government.

Wrote the American novel other American novels are measured against.

One refusal in Montgomery in 1955 triggered the boycott that broke bus segregation.

His polio vaccine ended an annual American terror, and he refused to patent it.

Walked on the Moon in 1969 and then declined almost every spotlight after it.

Built Tuskegee Institute and became the most influential Black leader of his era.