Simplify the following text for a Grade 8 native English-speaking person.
Original: During the war , Romania was the most important source of oil for Nazi Germany , which attracted multiple bombing raids by the Allies .
Simplified: Over the course of World War II , Romania was the source for most of the oil for Nazi Germany . This made it an important target for many bombing raids ( where airplanes attempted to drop bombs on important places ) by the Allies .