Women first participated in the Olympics in 1900, but, even then, they had only three options: tennis, golf, and sailing. It wasn't until this year's games that women made up almost half of the athletes competing.
Here are all of the Olympic sports that women weren't always allowed to compete in — and when it was finally allowed:
1.1900: Golf, tennis, and sailing
2.1904: Archery
3.1912: Swimming and diving
4.1924: Fencing
5.1928: Athletics and gymnastics
6.1948: Canoeing and all alpine skiing disciplines
7.1952: Cross-country skiing and equestrian
8.1960: Speed skating
9.1968: Shooting
10.1976: Basketball, handball, and rowing
11.1980: Field hockey
12.1984: Cycling, synchronized swimming
13.1992: Judo
14.1996: Soccer and softball
15.1998: Curling and ice hockey
16.2004: Wrestling
17.2012: Boxing
18.2014: Ski jumping
19.2016: Rugby
20.2020: Karate, skateboarding, surfing, and sport climbing
Which of these sports surprised you the most? Let us know in the comments!