5 points
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

Respuesta :

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.

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