Complex sentence: After the First Anglo-Boer War, Gladstone's government restored the Transvaal's independence in 1884 by its signing of the London Convention, and no one could have foreseen the discovery of the colossal gold deposits of the Witwatersrand a mere two years later.
Split into simpler sentences: After the First Anglo-Boer War, Gladstone's government restored the Transvaal's independence in 1884 by signing of the London Convention. No one knew there would be the discovery of the colossal gold deposits of the Witwatersrand two years later.