built to connect the Copperbelt to the main line. The Beira route was well established and the BSAC wanted to prevent the Copperbelt companies taking advantage of other routes it did not control. The Benguela Railway to Angola, completed in 1931, provided the shortest, most direct route for copper from both Katanga and Northern Rhodesia, but it was never used to full capacity because both the Congo and the Rhodesias restricted its traffic in favour of their own lines. When the BSAC administration of the Rhodesias was terminated, an agreement between the Colonial Secretary and the company of 29 September 1923 recognised that BSAC was entitled to protection because of the size of its railway investment in Northern and Southern Rhodesia. The agreement required the governors of each territory to refer any Bill authorising the construction of new railways or altering the rates that the existing railways charged to the Colonial Secretary. This prevented the legislatures of Northern or Southern Rhodesia from introducing competition or exerting pressure on the BSAC-controlled railways to reduce rates without British government sanction. Railways and the settlers European settlers had two main criticisms of British South Africa Company railway policy. Firstly, that its financial arrangements unfairly benefited the company and its shareholders, and secondly, that the settlers paid for these benefits through exorbitant railway rates. Although the allegations were probably ill-founded, they caused tensions between the settlers and the BSAC. On the shorter east coast route from Beira, running expenses were high because of construction debts and because the Mozambique Company, which was granted the original concession to build the railway in 1891, imposed a transit duty of up to 3% on goods destined for Rhodesia in return for the sub-concession to the Beira Railway Company. From 1914, the European settlers had a majority in the Advisory Council, and called for the replacement of BSAC control of the railways through nationalisation. In 1923 responsible government was achieved, but rather outright nationalisation, the settler government opted for a form of public control under the Railway Act of 1926. This left BSAC as owner of the railways, which were called Beira and Mashonaland and Rhodesia Railways until 1927, and Rhodesia Railways Limited after. This remained the situation until 1947, when the Government of Southern Rhodesia acquired the assets of Rhodesia Railways Limited. Commercial activities Early trading The company was empowered to trade with African rulers such as