sentences:  In July 1875, Chamberlain tabled an improvement plan involving slum clearance in Birmingham's city centre.Chamberlain had been consulted by the Home Secretary, Richard Assheton Cross during the preparation of the Artisan's and Labourers' Dwellings Improvement Act 1875, during Disraeli's social improvement programme.Chamberlain bought 50 acres (200,000 m²) of property to build a new road, (Corporation Street), through Birmingham's overcrowded slums.