5points
9. (5.1) filibusters were used by united states senators from the south in
the 1950s and 1960s to
block passage of civil rights bills
o
protest united states involvement in vietnam
o
gain approval of presidential appointments to the supreme court
override presidential vetoes of environmental bills

The correct answer for this question is block passage of civil rights bills

Explanation:  Filibusters is a term used in politics to prevent or delay voting in an assembly. This was what the Senators did to block passage of civil rights bills.

can you give a picture of the map, i'll be able to update my answer!

barack obama he actually listens