Simplify the following text for a Grade 10 native English-speaking person.
Original: In 1949 , she married industrialist Giovanni Battista Meneghini who became her manager .
Simplified: Upon her arrival in Verona , Callas met Giovanni Battista Meneghini , an older , wealthy industrialist , who began courting her . They married in 1949 , and he assumed control of her career until 1959 , when the marriage dissolved .