What's a channel when it involves bodies of water, and how did it lead to a myth about Yü the Great?

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.

In 1819, what did the united states obtain from spain for $5 million?

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