Final answer:
Los Tres Grandes, comprised of Rivera, Orozco, and Siqueiros, chose to focus on public art rather than European gallery art. They used murals to convey political and social messages to the Mexican people. Their work was instrumental in the Mexican muralism movement and left a lasting impact on the art world.
Step-by-step explanation:
Los Tres Grandes, including mural artists Rivera, Orozco, and Siqueiros, embraced public art over European gallery art. These artists believed in the power of art to communicate political and social messages to the masses. They created large-scale murals that depicted Mexican history, social issues, and the struggles of the working class.
Their work was influential in the development of the Mexican muralism movement and had a significant impact on the history of art.