Which of the following best describes how the branches of the indo-european family of language formed? a. linguists have no explanation. b. wars began and groups split off, developing their own languages as a fighting tactic. c. people migrated about eurasia and dialects developed due to the isolation of cultures.

the president was the speaker and it was a great part of history.

explanation:

video of the national aeronautic space administration's (nasa) coverage of president john f. kennedy’s address at rice university, houston, texas, concerning the nation's efforts in space exploration. in his speech the president discusses the necessity for the united states to become an international leader in space exploration and famously states, "we choose to go to the moon in this decade and do the other things, not because they are easy, but because they are hard."

answer: b

explanation: i have never watched or read about him but looked it up and it seems the most sensible answer. sorry if it's wrong. ☺