What is meant by cotton is king? how did its sovereignty extend beyond the south? what implications did its rule have?

The answer is the cotton farms were dominating the southern economy.

Explanation:

King Cotton was a popular term used in antebellum south, mostly due to the fact  that cotton dominated the southern economy. The slaves worked hard in cotton plantation bringing prosperity and economy growth to the south.

he believed that congress would be better not dealing with "lobbyists", or people who seek to influence (a politician or public official) on an issue, since historically, they had problems with these kinds of people. he thought lobbying produces benefits, but should be carefully monitored.