On: The Wright brothers invented the airplane, right? Not if you're in Brazil

[Tuna-Fish]

That is with a wright propeller, almost 3 years after the first powered flight of the wright flyer.

[shaky-carrousel → Tuna-Fish]

So, the Europeans at the time believed it was the first such achievement, but Dumont somehow was able to get hold of some propellers nobody in Europe heard about? Seems a bit far-fetched.

As I said in another comment, the Wright Brothers were pretty secretive about their works and it wasn't until 1908 that people in Europe knew about them.