Complex sentence: The owners planned to build a railway to the coast in the 1830s under the supervision of the young English engineer, John, later Sir John Hawkshaw, but the project was put off several times due to civil wars and problems at the mines.
Split into simpler sentences: The owners planned to build a railway to the coast in the 1830s under the supervision of the young English engineer, John, later Sir John Hawkshaw. However, the project was put off several times due to civil wars and problems at the mines.