Final answer:
The National Future Farmer magazine, known today as FFA New Horizons, became part of the member's dues following the expansion of the Farmer's Alliance, though the specific date is not provided.
Step-by-step explanation:
The National Future Farmer magazine, now known as FFA New Horizons, did not become a part of the member's dues until after the Farmer's Alliance experienced significant growth and influence. Historical records about organizations such as the Colored Farmers' National Alliance and the influence of the Rise of the Populist Party indicate the importance of these farming associations which all played roles in educating and expanding their influence amongst farmers during the 1880s and beyond. The Farmer's Alliance, an organization proliferating during this time, had an impact on how agricultural groups like the Future Farmers of America would eventually integrate educational services like a dedicated magazine into their member dues, although the specific year when this occurred is not provided here.