What crucial technological advantage did Alternating Current (AC), championed by Tesla and Westinghouse, possess over DC?

Answer

It could be transformed to very high voltages using transformers for efficient long-distance transmission.

AC's primary advantage was the ability to use transformers to step voltage up significantly for long-haul transmission with minimal loss, and then step it back down to safer levels near the end-user.

What crucial technological advantage did Alternating Current (AC), championed by Tesla and Westinghouse, possess over DC?
inventioninventorpowersystemelectric