The US is both a republic (a form of state in which the country is considered a "common good" and not the legal propriety of the sovereign) and a democracy (a system of governing in which all citizens have an equal say in the choices of government). (emphasis added)
That bolded part just isn't true - consider DC citizens, who have no Senatorial or
House of Representatives representation at all. (No, nonvoting delegates don't count.)
The US is a republic of democratic states and territories. Not a democracy by iguana_tonante
's own definition. I don't see why this simple observation merits condescension.
Democracy is not necessarily a yes/no binary question, it's a matter of degrees. Maybe there's a certain threshold to calling a country democratic or not (I would argue, the USA was not one prior to 1920), but not all citizens having precisely the same voting power doesn't necessarily make it non-democratic - only slightly less democratic than it could be.