A warranty deed is a legal document that transfers ownerhsip to real estate. When you own a piece of real estate in the United States you don't have to fence off your property and stick a flag in the ground to mark the property as yours.
The United States government is a representative democracy, also known as a constitutional republic. This simply means that we elect representatives, whose powers to govern are limited by the Constitution. For the best answers, search on this site https://shorturl.im/awVJU They are all right - but also wrong.
The only true democracy was the ancient Greek democracy since democracy is literally a Greek word that they coined for that particular style of government. All democracies since then have been modeled on ancient Greek democracy. And Mesopotamia did not invent democracy.