Short answers, pulled from the story.
The American Football League and National Football League merged into a unified league for the first time during the 1970 NFL season. This consolidation combined ten AFL franchises with three existing NFL clubs to form the American Football Conference while thirteen remaining NFL teams formed the National Football Conference.
Thelma Elkjer drew the winning plan from an envelope on the 16th of January 1970. She served as secretary to Commissioner Pete Rozelle when this method resolved contentious negotiations among team owners regarding divisional balance and regional rivalries.
The Pittsburgh Steelers used their first overall pick to select quarterback Terry Bradshaw from Louisiana Tech University during the 1970 NFL draft. The draft took place over two days at New York City's Belmont Plaza Hotel from January 27 to 28.
Chicago Bears needed a stadium capable of seating at least 50,000 spectators and equipped with lighting for night games because Wrigley Field proved inadequate. They played their first home game against Philadelphia Eagles at Northwestern University's Dyche Stadium as a trial run before moving to Soldier Field beginning in 1971.
Monday Night Football launched on ABC starting the 21st of September 1970 making professional football the first sport to feature regular prime-time national broadcasts. The program featured veteran announcer Keith Jackson alongside Howard Cosell and former Cowboys quarterback Don Meredith as commentators.
Baltimore Colts defeated Dallas Cowboys 16-13 to win Super Bowl V concluded the season on the 17th of January 1971 at Orange Bowl in Miami. The Pro Bowl followed Sunday with NFC defeating AFC at Los Angeles Memorial Coliseum completing the league's first unified championship cycle.