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Legal in what way was it? If for investment assets of course Bitcoin legal but if for tool Bitcoin transaction not yet legal in my country. The government in my country does not want it if people use Bitcoin as their transaction tool. Because the Government does not want if its citizens more switch to Bitcoin than the currency of the country.
Each country has its own policies. So, some are legalized and some are not. It must be more specific, whether for investment or commodity or as a means of payment. It needs to be well understood.