Complex sentence: Prior to the creation of Pakistan in 1947, modern-day Bangladesh was part of ancient, classical, medieval, colonial Indian empires, internal squabbling, and a tussle between Hinduism and Buddhism for dominance.
Split into simpler sentences: Prior to the creation of Pakistan in 1947, modern-day Bangladesh was part of ancient, classical, medieval and colonial India. The area's early history featured a succession of Indian empires, internal squabbling, and a tussle between Hinduism and Buddhism for dominance.