Complex sentence: He was allowed to travel to places barred to other foreigners, and in 1955 he organized an historic meeting between Canadian External Affairs Minister Lester B. Pearson and Communist Party chief Nikita Khrushchev.
Split into simpler sentences: He was allowed to travel to places barred to other foreigners. In 1955 he organized an historic meeting between Canadian External Affairs Minister Lester B. Pearson and Communist Party chief Nikita Khrushchev.