The Golden Triangle where the fortune of an American entrepreneur and engineer who invented what was made?
Downtown Pittsburgh: Downtown Pittsburgh, colloquially referred to as the Golden Triangle or Dahntahn in eye dialect, and officially the Central Business District, is the urban downtown center of Pittsburgh. George Westinghouse: George Westinghouse Jr. (October 6, 1846 – March 12, 1914) was an American entrepreneur and engineer who invented the railway air brake and was a pioneer of the electrical industry, gaining his first patent at the age of 19.
i don't know