No foreign corporation shall do any business in this state without having at least one known place of business and an authorized agent or agents therein, and without filing with the secretary of state a certified copy of its articles of incorporation or association. Such corporation may be sued in any county where it does business, by service of process upon an agent anywhere in the state. The legislature shall, by general law, provide for the payment to the state of Alabama of a franchise tax by such corporation, but such franchise tax shall be based on the actual amount of capital employed in this state. Strictly benevolent, educational, or religious corporations shall not be required to pay such a tax.