Mezue ahịrịokwu na-esonụ: Ndị Allies weghaara Japan ruo 1952, bụ́ mgbe e tiri iwu ọhụrụ na 1947 nke mere ka Japan ghọọ ọchịchị onye eze nke dabeere n'iwu. Mgbe afọ 1955 gachara, Japan nwere nnukwu ọganihu akụ na ụba n'okpuru ọchịchị nke Liberal Democratic Party, wee bụrụ ike akụ na ụba ụwa. Kemgbe Lost Decade nke 1990s, uto akụ na ụba ebelatawo. N'abalị iri na otu n'ọnwa Mach n'afọ 2011, oké ifufe fere na Japan.
ala ọma jijiji na oké mmiri ozuzo, otu n'ime ala ọma jijiji ndị kasị ike e dekọrọla, nke gburu ihe fọrọ nke nta ka ọ bụrụ mmadụ 20,000 ma kpatara ọdachi nuklia dị njọ na Fukushima Daiichi.