What did the construction of the hydroelectric power plant at Niagara Falls ultimately cement?
Answer
AC as the global standard for large-scale power transmission.
The successful design and operation of the first major hydroelectric plant at Niagara Falls, utilizing Tesla's AC system, confirmed AC's viability for massive, long-distance power delivery, solidifying its status as the global standard.

Related Questions
What fundamental physical principle did Michael Faraday demonstrate that enabled the theoretical basis for the electric generator?Where and when did Thomas Edison launch the world's first commercial central power station?Why was the parallel circuit arrangement vital to Edison's successful localized distribution system?What inherent physical limitation of Direct Current (DC) made widespread, long-distance electrification prohibitively costly?What crucial technological advantage did Alternating Current (AC), championed by Tesla and Westinghouse, possess over DC?Which historical event served as a massive public demonstration confirming the superiority of AC power transmission?What did the construction of the hydroelectric power plant at Niagara Falls ultimately cement?What key element of Edison's contribution was distinct from merely inventing the incandescent light bulb?What essential evolution, occurring after the DC/AC conflict, was necessary for creating resilient, large-scale regional grids?What accounts for the massive voltage differential between Edison's system and modern transmission lines?