Alexander graham bell was responsible for a revolutionary breakthrough in communication what is it?

He created the first telephone.

what are local authorities doing to fix the problem

explanation:

what are local authorities doing to fix the problem

a more perfect union: the creation of the u.s. constitution. the vote was unanimous. saddled with this weak government, the states were on the brink of not to lend a hand to any proceeding that seemed to pose a threat to that protection. delegates from virginia and other large states demanded that voting in