Charles Austin Beard was, with Frederick Jackson Turner

Frederick Jackson Turner

Frederick Jackson Turner was an American historian in the early 20th century. He is best known for his essay "The Significance of the Frontier in American History", whose ideas are referred to as the Frontier Thesis. He is also known for his theories of geographical sectionalism...

, one of the most influential American historians of the first half of the 20th century. He published hundreds of monographs, textbooks and interpretive studies in both history and political science. His works included radical re-evaluation of the founding fathers of the United States

Founding Fathers of the United States

The Founding Fathers of the United States of America were political leaders and statesmen who participated in the American Revolution by signing the United States Declaration of Independence, taking part in the American Revolutionary War, establishing the United States Constitution, or by some...

, who he believed were motivated more by economics than by philosophical principles. Beard's most influential book, written with his wife Mary Beard

Mary Ritter Beard

Mary Ritter Beard was an American historian and archivist, who played an important role in the women's suffrage movement and was a lifelong advocate of social justice through educational and activist roles in both the labor and woman's rights movements...

, was the wide-ranging and bestselling The Rise of American Civilization (1927), which had a major influence on American historians.