Simplify the following text for a Grade 5 native English-speaking person.
Original: The Bremgarten track remained the home of the Swiss Grand Prix until 1954 and in 1948 it was designated the European Grand Prix , in a time when this title was an honorary designation given each year to one grand prix race in Europe .
Simplified: The Bremgarten track remained the home of the Swiss Grand Prix until 1954 .