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Early history

The history of Monopoly can be traced back to 1903, when American anti-monopolist Lizzie Magie created a game called The Landlord's Game that she hoped would explain the single-tax theory of Henry George as laid out in his book Progress and Poverty. It was intended as an educational tool to illustrate the negative aspects of concentrating land in private monopolies. She took out a patent in 1904. Her game was self-published beginning in 1906.

Magie created two sets of rules: an anti-monopolist set in which all were rewarded when wealth was created, and a monopolist set in which the goal was to create monopolies and crush opponents.

Several variant board games, based on her concept, were developed from 1906 through the 1930s; they involved both the process of buying land for its development, and the sale of any undeveloped property. Cardboard houses were added, and rents increased as they were added to a property. Magie patented the game again in 1923.

According to an advertisement placed in The Christian Science Monitor, Charles Todd of Philadelphia recalled the day in 1932 when his childhood friend Esther Jones and her husband, Charles Darrow, came to his house for dinner. After the meal, the Todds introduced Darrow to The Landlord's Game, which they then played several times. The game was entirely new to Darrow, and he asked the Todds for a written set of the rules. After that night, Darrow went on to utilize it to distribute the game himself as Monopoly.

The Parker Brothers bought the game's copyrights from Darrow. When the company learned Darrow was not the sole inventor of the game, it bought the rights to Magie's patent for $500.

Parker Brothers began marketing the game on November 5, 1935. Cartoonist F. O. Alexander contributed the design. U.S. patent number US 2026082 A was issued to Charles Darrow on December 31, 1935, for the game board design and was assigned to Parker Brothers Inc. The original version of the game in this format was based on the streets of Atlantic City, New Jersey.