If a modern movie was made about a Wall Street love triangle how would it be different than a story that took place in the 1800's?
A modern movie made about a Wall Street love triangle would be radically different than a story that took place in the 1800s and this change would be mostly due to the change in the social and financial status of women since the 1800s.
In the 1800s, women were restricted to the home and their chores included giving birth to a lot of children (who would act as additional farm hands), taking care of household activities (cooking, cleaning, washing, etc.), and looking after the cattle and poultry, among others. They did not even have voting rights and slavery was a common practice. The liberties of women of color were even further curtailed (though the men of color did not fare better, their day-to-day activities were different). Hardly any educational opportunities were available.
Now consider the current era, where women have equal rights and opportunities and maintain their social and financial status as "equals." So a current Wall Street love triangle would most likely involve Wall Street professionals and business leaders, unlike the "domesticated and enslaved" woman of the 1800s.