sentences:  Bloemfontein was occupied on 13 March, Johannesburg on 31 May and Pretoria on 5 June.When Roberts formally annexed the Transvaal on 3 September, the Salisbury ministry, emboldened by the apparent victory in South Africa, asked for the dissolution of Parliament, with an election set for October.With Salisbury ill, Chamberlain dominated the Unionist election campaign in 1900.