Translate the following English sentence to French:
"I was there before the war began. At that time, the Serbs had already driven 200 000 to 300 000 people from their homes and had ravaged and laid waste whole areas of the country."
J'étais là avant que la guerre n'éclate ; les Serbes avaient déjà expulsé 200.000 - 300.000 personnes, ils avaient déjà dévasté, brûlé et détruit l'ensemble du territoire.