Following the armed revolutions in Mexico between 1910 and 1920, Mexican art entered a golden period during the years between World War I and World War II. Its collective achievements—the important activities of the art schools, commissioned public murals, and active printmaking projects—were centered in Mexico City. The Mexican muralists Diego Rivera, José Clemente Orozco, and David Alfaro Siqueiros and the painter Frieda Kahlo were among the most famous modern artists of their time. Because of the country's socialist ideals and the vitality of its capital's art scene, Mexico City drew many artists from the United States and Europe, including painters, photographers, and writers. Their presence created a cosmopolitan atmosphere comparable to the excitement generated by the international avant-garde in Paris between the wars.