How does Napoleon gain control over Animal Farm?

Napoleon gains control over Animal Farm primarily by using fear tactics and propaganda. After the rebellion, he gradually consolidates his power by instilling fear among the other animals. He employs the dogs as enforcers of his will, using their presence to intimidate others and eliminate dissent. Additionally, he manipulates information and spreads propaganda through Squealer, who distorts the truth to ensure that Napoleon is viewed as a heroic figure. This combination of fear and manipulation fosters an environment where dissent is suppressed, allowing Napoleon to establish and maintain his authoritarian regime on the farm.

The other options do not accurately reflect Napoleon's methods. For instance, fostering friendships with humans contradicts the initial principles of the animal rebellion, while democratic elections would suggest a level of equality and choice that is absent in Napoleon's governance. Meanwhile, being the eldest pig does not automatically confer authority or control; it is Napoleon’s calculated strategies and ruthless tactics that truly establish his dominance.