Answer:
Interest in liquid-propelled rockets increased during World War I
Explanation:
Initially, Robert Goddard, worked to develop solid-fuel rockets for the U.S. Army in World War I, but later switched to liquid fuels, such as liquid oxygen and gasoline, which is the most convenient propellant combination.
He finally launched his liquid funds rocket in 1926, making it the first liquid-fuel rocket launch in history.
However, Neil Armstrong became the first representative of the human species to walk on the surface of another celestial body during Apollo 11 mission in 1969, while, Sputnik 1 is the first human-made object to orbit Earth, made by the Soviet Union, on 4 October 1957.
Also, China, Canada and France are not on space race against NASA
