Based on the clue '800s bc maybe i might be a long lost husband but t...', what is the answer?

Based on the clue '80 of us lifeguard ocean rescues are prompted by t...', what is the answer? Based on the clue '80 of washington dcs fresh drinking water comes fr...', what is the answer? Based on the clue '80 to the french is quatre vingts 4 twenties to ab...', what is the answer? Based on the clue '800 ad this man is crowned the first holy roman em...', what is the answer? Based on the clue '80s 90s designers shrank this common hiking bag ...', what is the answer? Based on the clue '80s new wave band heard here', what is the answer? Based on the clue '80s sci fi blockbuster miniseries concerning man e...', what is the answer? Based on the clue '80s singer kim kids in america forms a duo with da...', what is the answer?