 Complete the following phrase:  In the late 19th century there were four colonies and independent states in what is now South Africa - the British Cape Colony, Natal and the two Boer Republics - Orange Free State and South African Republic. There were numerous attempts to unify these separate entities due to fears of external non-British European powers potentially interfering. Numerous proposals were put forward from a highly centralised unitary state to a more loose decentralised federation as proposed by powerful cape politician Saul Solomon. Ultimately these endeavours failed, and 