Final answer:
Countries in Northwestern Europe illustrate a mixed economy.
Step-by-step explanation:
The economic system that is illustrated by countries in Northwestern Europe is a mixed economy.
In a mixed economy, there is a combination of both market-oriented and command elements. While individuals are allowed to own businesses and choose their jobs, the government also plays a significant role in the provision of education and healthcare.
For example, countries like Germany and the Netherlands have a mixed economy where private businesses operate alongside public institutions like schools and healthcare facilities.