… (who was in control & setting trends), function (why could men ride a horse comfortably?), ideologue (Marie Antoinette HAD it with tight dresses so made up some loose ones), & technologyl leads.
In 1800, all these were big influences, beginning with an industrial revolution in Europe due to improved fabric making & energy resources.
(photo: Newcomen’s steam engine invented in 1711, improved for use in fabric production by 1781).