All of the crusades were under the title of "holy war". For a holy war to happen, it had to be sanctioned by the Pope and waged against enemies of Christianity. Therefore this trip to Jerusalem was a pilgrimage because participants would kill non-Christians.
It seems to be true from the other dudes answer
John rovers
Through simple majority, the president nominates and then the senate votes? I think but Ik it’s through simple majority
They can choose how long they want to stay, like they can stay till death or they retire etc
Hope it helps