What invention will define the modern era?

Brainliestttme : ) why was the launch of sputnik in 1957 important? -most in the u. s. had not thought the soviets were capable of producing satellite technology. - it made clear that the u. s. space program was dominant. - most in the soviet union had not thought the u. s. was capable of launching manned aircraft. -it established the fact that a more dangerous hydrogen bomb could be created.

Who is soccer player win world cup champions league premier league play with cristiano ronaldo with messi & henry

What is the name of the first president