 Complete the following phrase:  The 1990 World Cup was held in Italy. Cameroon, participating in their second World Cup, made it to the quarter-finals after beating Argentina in the opening game. No African country had ever reached the quarter-finals before. Mexico was unable to compete in the 1990 World Cup preliminary competition as a result of a two-year ban for age fraud at a youth championship, an incident known as Los Cachirules. the United States qualified for the first time since 1950. An unpleasant episode marred the South American qualifiers: during the match between Brazil and Chile, a firework landed close to the Chilean goalkeeper Roberto Rojas, who then feigned injury by cutting his own face with a razor blade he had hidden in his glove. His team refused to continue the match as they were down a goal at the time. 