Black holes themselves can not be seen, nor do they leave trails (since emptiness does not have to be caused by a black hole), but there is evidence for black holes: scientists can see the effects of their gravity on nearby stars. The answer is B.
I think its A.
B, D happened before the congress
and C and E could have happened as a result of anything<span />
The power of judicial review refers to the power of the "Supreme Court" to deem certain laws passed by Congress "unConstitutional". This greatly increased the power of the Supreme Court and led to a further separation of powers.
<h3>OOH means OHH Your so cute(◠‿・)—☆</h3>