Advances in technology and high revenue potential have led to a proliferation of online gaming, particularly fantasy sports such as the games offered by FanDuel and DraftKings. Due to relaxation of federal gaming laws, it is usually up to the states to determine what is legal and what is not. As a result, some states allow more online gambling than others, with the decision typically based on whether games are skill-based or have a "material degree of chance."
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