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.

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.