What was the first Roller Coaster to have an Inversion (Loop-de-Loop)?

Question

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Answer 1

It was the wooden coaster at Coney Island

Answer 2

The first upside down loop was in 1976 at Six Flags Magic Mountain. It was a 360 degree looping coaster named Great American Revolution now named the Revolution.

Answer 3

"The first looping coaster was located in Frascati Gardens in Paris, France. The hill was 43 feet high, had a 13 foot-wide loop and was tested with everything under the sun before humans were allowed on. The layout was simple: the rider rode down the gentle slope on a small cart and through a small metal circle."