To speak about people in countries, you need the appropriate vocabulary.
Confident - having confidence;
Freedom - the condition or right of being able or allowed to do, say, think, etc. whatever you want to, without being controlled or limited;
Value - the amount of money that can be received for something;
Tough - strong and determined;
Self-reliance - the ability to depend on yourself or your own abilities;
Trait - a particular characteristic that can produce a particular type of behaviour;
Solution - the answer to a problem;
Wealth - a large amount of money or valuable possessions that someone has;
Persistent - lasting for a long time or difficult to get rid of;
Common - the same in a lot of places or for a lot of people;
To contribute - to help to cause an event or situation;
Open-hearted - kind, loving, and honest;
Straightforward - easy to understand or simple;
Cheerful - happy and positive;
Relaxed - feeling happy and comfortable because nothing is worrying you.
Examples:
Wales are supremely confident of winning the match.
Property values have fallen since the plans for the airport were published.
After some tough bargaining, we finally agreed on a deal.
Arrogance is a very unattractive personality/character trait.