If you mean "culture" in a historic content then Romania has a byzantine orthodox culture(but with its own specific traits) similar to Greece and the other eastern orthodox countries like Serbia,Bulgaria,Russia,etc. in a modern context Romania has a western culture

No differences; the peoples are Romanians in Romania and also in Moldova (some Slaves minorities in Moldova and a Hungarian minority in Romania - the remains of the Middle Age invasions).

Rome captured Dacia on the western coast of the Black sea in the 2nd Century CE and romanised its culture. It was then called Romania after them.

Search in a library serious books about Romanian history, culture, litterature, geography, tourism.

Romania become a non-communist country but the industry, agriculture, education, culture, research, health system, etc. were irreversible destroyed. Approx. 3.106 persons emigrated in other countries.