yes, only the pope can appoint a cardinal.
Pope Clement XIII created 52 cardinals in seven consistories.
Roman Catholic AnswerTechnically God chooses the Pope working through his instruments, the Cardinals. They are the electors of the Pope as that is their job, that is why they are Cardinals to begin with.
The pope is chosen by the Cardinal Electors - all the cardinals under the age of 80.
Only cardinals under the age of 80 can vote for the pope.
A priest could only become pope if he is elected by the cardinals in conclave.
Only cardinals under the age of 80 at the time the conclave begins may vote for a pope.
Only those cardinals under the age of 80 who are able to travel to Rome elect the pope.
According to Wikipedia, a papal bull of 1058 In Nomine Domini reserved the right of election to cardinals only. The only non-Cardinals who have been elected to the Papacy would be: Pope Celestine V Pope Clement V Pope Gregory X Pope Urban IV Pope Urban V Pope Urban VI Before that time there was not an established College of Cardinals as we understand them today, so more non-Cardinals were probably elected in the first millennium.
Only the cardinals and a few assistants in the conclave are witnesses to the election of a pope.
Cardinals are named by the pope; that's the only way, as far as I know. Currently, those cardinals that are younger than 80 years participate in the election of the pope. Thus, the electors of the next pope have been appointed by one of the previous popes.
Cardinals have elected the pope since the year 1059 and cardinals alone have elected the pope since that year. However, the newly chosen pope had to be first approved by the lower clergy and laity. In 1139 that was changed and only the cardinals could vote and the winning cardinal was not subject to approval of others before taking office.
Only cardinals under the age of 80 at the beginning of the conclave are eligible to vote for a new pope. For the upcoming conclave that will replace Pope Benedict XVI there are 117 cardinals who meet that qualification.