Article snapshot taken from Wikipedia with creative commons attribution-sharealike license.
Give it a read and then ask your questions in the chat.
We can research this topic together.
Although cyclists had started in teams previously, the rules had forbidden them to work together against other cyclists. In 1913, this changed, and cyclists from the same team were allowed to work together. The organizers preferred riders to ride solo, so they added a rule that if a cyclist would win a stage with a margin of 20 minutes or more, he would not only get his own prize money, but also the half of all the other cyclists' prize money of that stage.
The first African cyclist took part in the Tour de France in 1913: Ali Neffati from Tunisia. Neffati had been discovered by Tour organizer Henri Desgrange, and would later become a driver at l'Auto, the newspaper that organised the Tour de France.