Respuesta :
The answer is "The first time the Constitution defined what a citizen
is". This is very important because not only is the first time the
Constitution set down any hard and fast rules about who were "official"
citizens of the United States, but also ties in the rights that citizens
have which can not be infringed on. Being passed shortly after the end
of the Civil War, it was rather hotly contested, especially since, among
other things, former slaves would now officially be granted
citizenship.