Answer:
D, 4
Explanation:
Japan is assembled from four main islands.
Such as:-
<u>Hokkaido, Honshu, Shikoku, and Kyushu</u>.
<span>After the success of the Sputnik launch in 1957, the US feared that the Soviet Union would be able to use space-based weapons against the United States, which is why the US frantically began the "Space Race". </span>