Where does the dual categorization of sexuality as either homosexual or heterosexual come from?

Question

Quizplus · Accepted Answer

The dual categorization of sexuality as either homosexual or heterosexual comes from Western cultural history, specifically from the late 19th and early 20th centuries. This was a time when Western society began to define and categorize sexual identities and behaviors based on a binary understanding of gender and sexuality.

Where Does the Dual Categorization of Sexuality as Either Homosexual