Complex sentence: In 1880, Griqualand West became a separate province of the Cape Colony, allowing for Cecil Rhodes' entrance into Cape Colony politics to further his agenda as one of the mining magnates when he stood for election to parliament in Barkly West.
Split into simpler sentences: In 1880, Griqualand West became a separate province of the Cape Colony. This allowed for Cecil Rhodes' entrance into Cape Colony politics to further his agenda as one of the mining magnates when he stood for election to parliament in Barkly West.