I heard about many website failures and before starting my online business I want to make sure about the legal aspects0 лайк (-а,-ов)
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That is a too general question for giving a helpful answer, please be more specific. What is your business about, where do you want to run it? Anyways the best way to deal with legal aspects is to get the advice of a lawyer competent in your field of interest or in your future business' domain.