: The early 20th century saw the birth of sexology, with researchers like Alfred Kinsey beginning to study sexual diversity. In the 1930s, individuals began seeking the first medical pioneers for gender-affirming care.

: World War II acted as a catalyst, uprooting people from small towns and allowing them to meet others like themselves in the military or urban centers. The Spark of Resistance: 1950–1969

The mid-20th century transformed quiet survival into public defiance.

For decades, trans individuals lived in the "shadows," often without a collective vocabulary to describe themselves.