HELPP ASAP PLS what do all signals that are used to communicate have in common ?

a. they all involve light waves

b. they all send information

c. they all use printed words.

d. they all use a series of sounds

In an effort to end the civil war, in 1864 the union planned to

During world war ii who is the commander-in-chief of the pacific fleet

The black hawk war began (20 points) a. sauk leaders signed the treaty of dancing rabbit creek. b. congress passed the indian removal act. c. the sauk moved onto a village established by white settlers. d. federal officials ordered the removal of all american indians from illinois.