Help! Will give brainliest :0

Need plz? due in 10 will give brainliest which of the following was the most significant aspect of revel's election to the senate? a. his election showed that the u. s. would quickly move past the civil war. b. his election to uphold the thirteenth and fourteenth amendments which gave freed slaves citizenship and voting rights. c. his election demonstrated the states were united in a union once more. d. his election was the first step in opening doors for other african-american political leaders.

Which conditions did austria demand of serbia after the assassination of archduke ferdinand? check all that apply. 1. swearing allegiance to the triple alliance 2. accepting responsibility for the assassination 3. turning over control of its military operations 4. surrendering half of its most fertile lands 5. suppressing anti-austrian groups and publications

How did german physicist werner heisenberg's uncertainty principle shake beliefs in newtonian physics?