Correct answer, none of the other people exist without these guys.The first few humans were a bad decision or two away from none of us being here right now
Nobody.
Anything anyones ever done couldn't happen without somebody else doing something before them.
Stupid question. People have only become important because of the previous decisions of others (whether positive or negative). No one person had a big effect, they were merely the next domino in a long line, each one only making an impact because of the previous one.