Original sentence: Realising that they could not muster a fighting-force that could match the colonial army, and after havig voiced their opposition to becoming either subjects to the Crown in the Cape Colony or servants in the Free State, they were forcibly removed into exile in 1863
Edited sentence: Realising that they could not muster a fighting-force that could match the colonial army, and after having voiced their opposition to becoming either subjects to the Crown in the Cape Colony or servants in the Free State, they were forcibly removed into exile in 1863