Board game history: When was Monopoly created as the modern commercial board game that became widely popular in the United States? Consider the creation of the Darrow version that led to mass marketing. Choose the correct year.

Given data

• We are asked for the creation date of the modern Monopoly game.

Concept / Approach
Elizabeth Magie's earlier Landlord Game (1904) inspired later versions. The version that became Monopoly was created by Charles Darrow around 1933 and sold to Parker Brothers, which began large-scale publication in 1935.

Reasoning
The creation that directly led to the popular commercial release is linked to 1933; 1935 marks Parker Brothers' first mass-market edition.

Final Answer
1933 (Darrow's version that led to the commercial launch).