A Republic, by definition, has two principle elements;
First, it is controlled by Law, therefore it does not control Law.
Second, it recognizes the private independent sovereign nature of each person (man or woman) of competent age and capacity, therefore a Republic must be representative in its nature.
A Republic recognizes Law is unchangeable, or at least that it can only be changed by a higher source than government. In a Republic the concept of “collective sovereignty” cannot exist, except with recognition that the State or nation, as a body of sovereigns, can speak through one elected voice; though that one voice can never lawfully interfere with the private rights of the individual sovereigns.