What did the accomplishments of Charles Lindbergh most clearly indicate? A. That the United States was a serious contender with Europe in the
field of aviation

B. That aircraft made traveling around the world without stopping a
feasible undertaking

C. That technology could allow a person to be in New York one day
and in Paris the next

D. That airplanes could be used in wartime for reconnaissance
missions

B. That aircraft made traveling around the world without stopping a  feasible undertaking

Explanation:

In 1927, a 25 year old Charles Lindbergh completed a flight that was known as a turning point in Aviation history when he completed a Transatlantic flight which was although the second time it had been done, was the longest flight at the time as well as the first solo Transatlantic flight.

Taking off from Roosevelt Field in New York, he landed just outside Paris in a jorney that took 33.5 hours to complete. This remarkable achievement showed the world that indeed it was possible to travel around the world without needing to stop something that could be done and intensified Aviation efforts to develop faster.  

the answer is a new goverment.