What is the term for the cultural and demographic shift beginning after World War II when millions of families moved from cities to new suburban developments like Levittown?

• A Urban renewal
• B Suburbanisation ✓
• C White flight
• D Gentrification

Levittown, New York, built by William Levitt in 1947, pioneered mass-produced affordable housing, offering returning GIs a home for as little as 65 dollars a month.