The game of Kemari was played in Japan as far back as 600 A.D. while other variations of early soccer saw the Native Americans having Pahsaherman, the Indigenous Australians having Marn Grook and the Moari’s having Ki-o-rahi.

However, according to FIFA, the game of Cuju (also Tsu-Chu which translates to “kicking the ball”) originating from China during the period of the Han Dynasty which ruled from 206 B.C. to 220 A.D. is the earliest form of the sport for which there is evidence.

That would mean the origins of the sport of soccer was invented by the Han Dynasty during the imperial dynasty of China over 2,200 years ago. Historians have claimed that the sport was played even before then as far back as 5,000 years ago. But based on historical evidence, it is the Han Dynasty.

However, modern soccer is a different story. The sport that is watched and played today that is loved by everyone was formalized in the United Kingdom in 1863.

In October of that year, the Football Association was formed with the merging of 11 London schools and clubs. They met at the Freemason’s Tavern and established rules for the game with the first ever soccer match being played in December between Barnes Football Club and Richmond Football Club. The rest, of course, is history.

So to answer who invented soccer, it ultimately depends on what you’re specifically asking about — modern soccer or the first variation of soccer.

If it’s the former, it was invented by the Football Association — a group of 11 London schools and clubs who met in 1863 to standardize the game. If it’s the latter, based on historical evidence, it was China’s Han Dynasty during the period of 206 B.C. to 220 A.D

https://soccerballworld.com/where-was-soccer-invented/

Soccer has been in the Olympics since 1900, and there has only been one Olympic Games where soccer did not feature. Interestingly the International Olympic Committee(IOC) and FIFA disagree on whether the first two Olympic games that included soccer should even be recognized. But we’ll talk about that further on in this article.
https://yoursoccerhome.com/is-soccer-in-the-olympics/

The Field
The field is divided in two halves. The center circle in the middle of the field is used to start the game, to start the second half and to restart after a goal has been scored. 

There is a large rectangular area and a smaller rectangular area found at each end of the field. These are vital areas for both teams, and are where penalty kicks are taken. The four corners of the field are inscribed with three-foot arcs where corner kicks are taken.

The Team

A team has a maximum of 11 players on the field at any one time, although a game can be played with as few as seven players on a team. Regions use short-sided teams in younger age divisions. Players get more "touches" on the ball, learn skills quicker and have more fun using this method.
https://www.ayso214.org/Default.aspx?tabid=863381