Poll taxes, literacy tests, and grandfather clauses
were adopted in southern states primarily to
(1) enforce the terms of the 15th amendment
(2) keep african americans from exercising their
right to vote
(3) stop criminals and immigrants from voting
(4) eliminate bribery and corruption at polling
places

worldwide, 780 million people do not have access to an improved water source. an estimated 2.5 billion people lack access to improved sanitation (more than 35% of the world's population)

nations must cooperate to bring about and maintain world peace.

nations must not wage wars or commit war crimes in a desire to control other nations.

i think i know which options you have but if these aren't options let me know