Complex sentence: In 1891, there were 24,037 Lascars employed on British merchant ships, and on the eve of World War I, there were 51,616 Lascars in Britain.
Split into simpler sentences: In 1891, there were 24,037 Lascars employed on British merchant ships. On the eve of World War I, there were 51,616 Lascars in Britain.