Final answer:
Upper-class people in Europe tried to escape the plague by moving to the countryside and living in manors.
Step-by-step explanation:
The upper-class people in Europe tried to escape the plague by moving to the countryside. They believed that the fresh air in rural areas would help protect them from the disease. Additionally, the countryside offered more space and less density, reducing the chances of contagion. Some upper-class individuals also decided to live in manors, which were often large, isolated estates.
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