A2012 conference in p'yŏngyang reviewed plans to restore the environment and in north korea.

answer: answer is (d)

explanation: it makes more sence than all the others and i know more stuff than you

answer: what was the us involvement in ww1? although the u.s. tried to remain neutral when ww1 broke out, it finally joined on april 6, 1917 after declaring war on germany. the reason for america to become involved in ww1 was germany's unrestricted submarine warfare, which had already sunk several american merchant ships.

explanation: