How long had president kennedy been in office when he was assassinated on november 22, 1963?

2 years ten months and two days

Explanation:

he took office on January 20, 1961 and died on november 22, 1963

answer:

the majority of cambodians living today were born after the khmer rouge was ousted in 1979 and some who survived can forget how bad it was. when khmer rouge forces seized phnom penh on april 17, 1975, the couple was living with eight of their children in a rural town called kampong chhnang.

explanation:

d) the constitution rights of native americans and their right to self-government on reservations