Question

はゆ

この文章の最後の文｢And Edison started all that off.｣が｢そして、エジソンがそういったことをすべて始めたのである｣という訳になるのですが、どの単語がどんな意味を為してこのような訳になるのか教えてほしいですm(*_ _)m

和訳の

①Thomas Alva Edison is said to have led the world ji               technology.

He invented many of the technologies vital to the modem world。_(③Although he

patented* over 1.100 inventions、many were improvements (0 the inventions of others.

A lot of invention nowadays improves cxisting products and proceSSS t0 make them a
little bit more effective. And Edison started all that o作