answer:Neither version is really optimal, in my opinion. Agglomeration isn’t the right word for a group of people. What are you trying to say with the word? Are you speaking of number, interest groupings, variety, or what? Conducive is used incorrectly. Something is conducive to the accomplishment or achievement of something if it enhances conditions that make it easier or more likely. Something might be conducive to serving niche markets but not to the markets themselves. A thing must be conducive to an action or state and not to a concrete noun. “Medium” is the singular, and “media” is its plural form. You should speak of printed media (or print media), and not of printed mediums. “Mediums” is reserved for people who claim psychic powers. I have almost invariably found that a sentence with fuzzy grammar and usage is also a sentence with a fuzzy thought behind it. Let’s have a clear, uncomplicated statement of your thought first, and then let’s see how best to express it.