Complex sentence: There were no roads connecting Toco with the rest of the island, and so, when in 1818, the round island steamer service was started by Governor Ralph Woodford, Toco benefited from this new transportation system to accommodate the trade in cocoa and other goods.
Split into simpler sentences: There were no roads connecting Toco with the rest of the island. So, in 1818, Toco benefited from the round island steamer service started by Governor Ralph Woodford to accommodate the trade in cocoa and other goods.