Resolute (adj) - means determined in action, ideas, or character. An example of resolute is when you just keep on trying to learn something whatever challenges or setbacks you face.
A simple sentence could be:- She was resolute in her determination to change her bad habits.
Naturalization is the process by which a certain foreign citizen becomes a citizen of a new country.
A simple sentence is:- Naturalization as a US Citizen would take long to process and would need numerous requirements.