useless trivia: What Word Means: A Former State In Northwest Germany?

Questions

In 1977 Soyuz ---------- returns to Earth.?

In 1922 U.S. Supreme Court unanimously upheld the ---------- Amendment (woman's right to vote).?

In 1983 The ---------- episode of TV show "M-a-s-h."?

This countries medal tally was: 44 Gold, 37 Silver, 29 Bronze, 110 in Total?

For what does the letters stand for in the initials ISBN?