Question: Was Summit or Crosstrack created in the 20th century, involve strategy, and was created by Milton Bradley?
Related documents: [0]  [DOC] Summit is a Cold War board wargame introduced in 1961 by Milton Bradley as "The Top Level Game of Global Strategy", with an updated release in 1971. Each player chooses one of the major powers from the 1950s/1960s era and controlled their economic and military buildup during each turn, much like Risk. [END] 
[1]  [DOC] Crosstrack, the "unique track switching game", is an abstract strategy game created by Shoptaugh Games in 1994. Players place special track pieces onto an irregular octagon board, winning by being the first to create an unbroken path between two opposite sides. [END] 
Answer: 
Summit
Summit