Are you thinking of representatives, and not votes? If so, that is the Senate, where each state has two Senators, no matter what its population.
Answer:
To lower labor cost
Explanation:
Other areas in North America and outside is are more labour intensive than Rust belt, so to lower labor cost which in turn lower cost of production, manufacturing jobs had to move.
They controlled most of modern day China
Because the roads are slippery.
Tires capability to 'grip ' the road is determined by the amount of friction force that the tire able to create when contactin with the road.
If the road is under slippery condition, the friction force is heavily reduced which make the tires unable to 'grip' the road as well as it is when it's dry.