[2] Moro moved to Paris on August 30, 1925, initially to pursue ballet dancing, but shortly after focused his artistic efforts on creating art and poetry.

He participated in his first group exhibition at the Cabinet Maldoror in Brussels alongside Santos Balmori, Jaime Colson, and Isaías de Santiago.

In 1938 Moro was forced to flee Lima to avoid arrest for publishing and distributing a "clandestine pamphlet in support of the Spanish Republic.

Here, he connected with various progressive artists of the time, including Wolfgang Paalen, Alice Rahon, Xavier Villaurrutia, Remedios Varo, Gordon Onslow Ford, and Leonora Carrington.

Moro organized the 1940 Exposición internacional del surrealismo (International Exposition of Surrealism) at the Galería de Arte Mexicano in Mexico City, with help from Wolfgang Paalen and with guidance from André Breton.