Yes, the two phenomenon exist.
Yes, after 1990.
it is complicated. you must live for 5 years i think in Romania and the take a test from romanian history and literature. it could be quicker if you get married with a romanian citizen.
People of Romania are called Romanians.
When people migrate the population that they left becomes smaller. When these people migrate to where they are going to that population becomes larger.
Romania's people descended from Thracian tribes of Dacians and Getaes.
The people of Romania is the Romanian people (in the Romanian language - poporul român).
Romania has many sick people.
Thanksgiving is not known in Romania.
Yes, the Romanian people is a majority in Romania.
It is not usually in Romania.
In Romania 90 % of the citizens are of Romanian origin.
I suppose that all normal people like Carpathians from Romania.