Which 3 of the following did Congress create in the 1860s?
1) A written explanation as to whether the word "equal" would allow for segregation if facilities were "separate but (otherwise) equal"
2) An attempted federal statute (first "Civil Rights Act") that "almost" prohibited racial discrimination
3) A public school policy for the D.C. schools that allowed racial segregation
4) An Amendment to the U.S. Constitution (14th) that demanded "equal protection of the laws"