Simplify the following text for a Grade 9 native English-speaking person.
Original: He grew up in a well-known and wealthy entrepreneurial and intellectual family , which was closely linked to the cultural and political events in Czechoslovakia from the 1920s to the 1940s .
Simplified: He grew up in a well-known and wealthy entrepreneurial and intellectual family . His family was active in culture and politics in Czechoslovakia from the 1920s to the 1940s .