Answer:
the weak Japanese economy
a communist victory in China
the support of communism by citizens
Explanation: By late 1947 and early 1948, the emergence of an economic crisis in Japan alongside concerns about the spread of communism sparked a reconsideration of occupation policies. . . . In this stage of the occupation, which lasted until 1950, the economic rehabilitation of Japan took center stage. SCAP became concerned that a weak Japanese economy would increase the influence of the domestic communist movement, and with a communist victory in China’s civil war increasingly likely, the future of East Asia appeared to be at stake.
–Occupation and Reconstruction of Japan,
1945–52