Maryland was originally claimed by Catholics.
mostly protestant but some Jewish and catholics
A good number yes. A good number of people in all US states are catholics. By no means are all californians catholics. But many many are.
The Archdiocese of Chicago serves 2.3 million Catholics.
Yes, because Catholics are just one of the many Christian groups.
The average percentage of Italians as Roman Catholics id about 96%
As there are Catholics in every country in the world, many of them underground (in China, etc.), there really is no way to come by this kind of information. We don't even have an accurate count of how many Catholics are alive each day.
The link below lists the number of Catholics in each country.
No. Catholicism is against religious circumcision, so not many, if any, Catholics are circumcised.
Yes, Louisiana is predominantly Catholic as opposed to Protestant, it was settled by Catholics from France.
Virginia was founded mainly as an economic venture, while Maryland was intended partly to secure religious freedom for persecuted Roman Catholics.
Many Catholics can read Emerson and other authors. Many cannot and they are called illiterate Catholics. If you are asking May Catholics read Emerson, the answer is Yes. Catholics may read whatever they use to read. The index of prohibited books was abolished in 1963.