question: What were some of the reasons the Aboriginal population continued to recline ?
answer: introduced diseases , particularly smallpox , frontier violence and dispossession from their lands
turker_answer: Aboriginal population continued to recline because of introduced diseases , particularly smallpox , frontier violence and dispossession from their lands .
rule-based: Some of the reasons the Aboriginal population continued to recline were introduced diseases , particularly smallpox , frontier violence and dispossession from their lands .