In 1889 the Brazilian empire was overthrown in a military coup. The goodwill and assistance of the United States to the young republic of Brazil helped forge an alliance. But America's apparently irresistible political and economic advances into Brazil were also hampered by disagreements-over naval armaments, reciprocity arrangements, the issue of coffee valorization, and in the 1920s over Brazil's efforts to play an active role in the League of Nations at Geneva. The relationship proved to be unequal, with the United States gaining influence in Latin America, as the Brazilian elite's ambitions and vanities were fed.