There were multipule crusades, many of witch had 10,000+ people involved. So in total there were probaly about 150,000+ people in total.
To many, WAY to many.
Any number greater than one.
250 thousand! :) That's a lot isn't it!
How many people were involved in the holocaust? Where does personal responsibility for your actions begin? Does operating a locomotive hauling jews, pows, homosexuals, and assorted other undesirables...