Some of the factors were money, power and their leaders were very powerful.
Answer:
The adaptation of the laws was significantly delayed with respect to sociocultural development. The equalization of homosexuals was part and consequence of a liberalization of sexuality with respect to cultural traditions, which have been losing importance during the twentieth century and that gave way to the concept of individual sexual freedom. The emancipation of homosexuals began in the USA. UU. during world war II. Important milestones along the way were the study Male sexual behavior (1948) by Alfred Kinsey, the foundation of the Mattachine Society (1950), the civil rights movement (1955-1968), some of whose promoters would later become activists homosexuals, the Stonewall riots (1969), the creation of fighting organizations, such as the Gay Liberation Front (1969), the elimination of homosexuality from the catalog of diseases of the Psychiatric Association of the United States (1973), the reorientation of the movement gay during the AIDS crisis (since 1981), the inclusion of minorities, such as transsexuals (since the 1990s), and the struggle for gay marriage in the 21st century.
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