Satyajit Ray's film 'Pather Panchali', which precedes 'The World of Apu', is released in 1955, marking the beginning of the Apu Trilogy.
The second film in the Apu Trilogy, 'Aparajito' is released in 1956, continuing Apu's story.
The final installment of the Apu Trilogy, 'The World of Apu' is released, concluding Apu's journey in Satyajit Ray's critically acclaimed series.