Complex sentence: In 1940, Hakim Mohammed Said the youngest son of Abdul Majeed joined Hamdard Dawakhana and by 1947, Hamdard became a prominent manufacturer of herbal products and medicines in the subcontinent.
Split into simpler sentences: In 1940, Hakim Mohammed Said the youngest son of Abdul Majeed joined Hamdard Dawakhana. By 1947, Hamdard became a prominent manufacturer of herbal products and medicines in the subcontinent.