What major problem is a differential designed to prevent?

A differential is designed to prevent wheel slippage and maintain traction in vehicles, especially when turning. It allows the outside wheels to rotate faster than the inside wheels, accommodating for the difference in distance traveled during a curve. This capability helps to improve stability, control, and overall handling of the vehicle, thereby enhancing safety and performance. Without a differential, tires would wear unevenly, and handling would be compromised, leading to potential accidents.