Why is the transmission of electricity over wires over long distances carried out using power lines under voltage

Why is the transmission of electricity over wires over long distances carried out using power lines under voltage of hundreds of thousands of volts?

To reduce losses for heating wires.

Remember: The process of learning a person lasts a lifetime. The value of the same knowledge for different people may be different, it is determined by their individual characteristics and needs. Therefore, knowledge is always needed at any age and position.