When was the declaration of Independence signed?

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.

What is the impact of enlightenment ideals on the development of economic, political, and religious structures in the western world?

Can someone me out with this , i'm putting 30 points on it