What record did chuck yeager break?

Chuck Yeager broke the sound barrier on October 14, 1947, only days after cracking several ribs in a horseback riding accident. In 1952, he set a new air speed record of 1650 mph, more than twice the speed of sound.

Explanation:

        i'm fairly sure that the correct answers are 2 and 3.

        i used both my knowledge of world history and the process of elimination to obtain these answers. option 1 cannot be a possible selection because the mandate of heaven belongs to ancient chinese philosophical belief. option 4 sounds like it would benefit the region than detriment it. however, both 2 and 3 explain a potential reason for what could have contributed to the fall of the roman empire.

      hope this ! if i were you, i'd get a second opinion, because i haven't taken this course for a year. best of luck!

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