Founded by Oliver H. Kelley, the organization that came to be known as the _______ provided

educational, social, and cultural activities to its rural members.

The Grange (short form) or the National Grange of the Order of Patrons of Husbandry (long form).

http://freemasonry.bcy.ca/biography/kelley_o/kelley_o.html

the grange

To find the answer to the question, we can follow a simple step-by-step process:

1. Start by understanding the context and keywords in the question. In this case, we have the context of an organization founded by Oliver H. Kelley, and we're looking for the name of the organization that provided educational, social, and cultural activities to its rural members.

2. Now, we can conduct a quick online search using the given information. We'll search for keywords like "Oliver H. Kelley organization," "educational social cultural activities rural members," or other related phrases.

After conducting the search, we find that the organization founded by Oliver H. Kelley that matches the description is the "National Grange of the Patrons of Husbandry," commonly known as the "Grange."

So, the answer to the question is the "National Grange of the Patrons of Husbandry" or simply the "Grange."