This letter is for British friends trying to sort out what has happened to them and their country, too—-but the points are the same except for the names and dates, and the information overall about “incorporation v. corporation” is the same and of use for all.)
The present rot began with Benjamin Desraeli, Queen Victoria and the Enfranchisement Act. That served to make all voters franchisees obligated to obey every whim of the British Crown Corp. After enslaving the people via promising them the right to vote, they enslaved the towns and cities via the Municipal Corporations Act (1888) and turned all of them into just cogs in the Crown machinery.
Your history parallels what went on here and throughout the old British Empire. Start with those two acts in Britain and compare with what happened here. You will see that you have an exactly analogous circumstance.