The twenty-two-year Haitian occupation that followed is recalled by Dominicans as a period of brutal military rule, though the reality is more complex. It led to large-scale land expropriations and failed efforts to force production of export crops, impose military services, restrict the use of the Spanish language, and eliminate traditional customs such as cockfighting. It reinforced Dominicans' perceptions of themselves as different from Haitians in "language, race, religion and domestic customs". Yet, this was also a period that definitively ended slavery as an institution in the eastern part of the island.