Football is by far one of the most popular sports in the entire world. This is a fact that is not even worth over-stressing.
There are several different football/soccer leagues that are played in different parts of the world. When it comes to figuring out which one of them is the best among the others, nothing can be said with absolute surety.
The offside rule is considered to be among the list of the most complex rules in the entire game of soccer.