Edwin hubble was the first to suggest that the universe is expanding. we can verify his theory by observing the
of distant stars and galaxies.

b. africa to the americas

explanation:

i know social security wasn't one.

explanation:

hope my answer has you!

cur

explanation:

cancer

the national congress's powers over the states were specific and definite: it had the sole power to negotiate treaties, declare war, and make peace. all powers not granted to congress were reserved for state governments. congress had no power to levy taxes, for example.