The best answer is, States with the largest populations send more representatives to the House.
Members elected to the House of Representatives, which is part of the U.S. Congress, are determined by their state and by the number of constituents in that state. Each state must have at least one elected member to the House of Representatives but can have much more like California, who sends 53 representatives to the nation's capital. This representative process differs from those elected to the Senate, the other half of the U.S. Congress, where each state elects two representatives regardless of population size.
I believe there are 33 countries but I don’t know for sure
