A trade license is needed by a business in order to legally carry out various activities. It is a legal document that provides legitimacy to a company and gives it the ability to perform certain actions in the country in which the trade license was granted.
A certificate of incorporation is a legal document/license relating to the formation of a company or corporation. It is a license to form a corporation issued by state government or, in some jurisdictions, by non-governmental entity/corporation.
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