Ответ:

Выбираем формы по времени действия: общеизвестные современные факты употребляются в Present Simple, а события прошлого — в Past Simple.

  1. In Kobrin, there grows an oak tree that is about 400 years old. Nobody knows who planted it in the centre of the town. In 2020, the tree got an official name — Volat. In the past, local people believed that touching it on Midsummer’s day protected them from illnesses. How many events does the oak tree remember?
  2. How did the history of Dzisna begin? With a fortress that protected Polotsk from the Livonian Knights. In 1563, they built a powerful castle. A few years later, the town got Magdeburg city rights. Today, Dzisna is the smallest town in Belarus. No more than 1,500 people live here.