UnScramble this Word: e u e s n r t?

Questions

He was the first president born in the 20th century.?

Martin Luther King, Jr. was assassinated in this city.?

This remote area was crossed on foot for the first time in 1968-1969.?

John Young and him were the first astronauts to fly the two-occupant Gemini.?

Redhead who had back-to-back #1s in 1988.?