Whose interests did most American Presidents protect in the late 1880s?

In the late 1880s, most American Presidents primarily protected the interests of big businesses and industrialists. This was a period marked by rapid industrialization and economic growth, where policies often favored corporate interests, such as railroads and large manufacturers, over those of workers and small farmers. The influence of wealthy industrialists on politics led to legislation that supported monopolies and limited labor rights, reflecting a broader trend of prioritizing economic expansion and capitalist interests.