sentences:  However, in Brazil, Marvelman became Jack Marvel.Though the Marvelman titles were successful for a considerable time, this changed abruptly in 1959 when changes in British law allowed comics to be imported from the United States.The black-and-white Marvelman books were unable to compete with the full color imports, forcing Miller to cancel "Marvelman Family", downgrade the other two titles to monthly status, and use reprinted adventures for their content.