London's underground system, could not have come into existence when it did." When it opened, the Metropolitan Railway had a significant impact on street traffic, particularly cabs and omnibuses but these quickly recovered to near their former levels, despite the Metropolitan Railway also carrying over 9 million passengers in its first year of operation. The Metropolitan Railway and the network of underground lines that grew from it was the first in the world and the idea was not adopted elsewhere until 1896 when the Budapest Metro and the Glasgow Subway were both opened. Without Pearson's promotion of the idea of an underground railway when he did it is possible that transport developments at the end of the 19th century developments, such as electric trams and vehicles powered by internal combustion engines, might have meant the underground solution was ignored. The expansion of the capital that the underground network and its suburban surface extensions enabled was considerable and rapid and helped the population of what is now Greater London to increase from 3,094,391 in 1861 to 6,226,494 in 1901. References Bibliography External links 1793 births 1862 deaths British railway pioneers People associated with transport in London Liberal Party (UK) MPs for English constituencies UK MPs 1847–1852 History of the London Underground Burials at West Norwood Cemetery Deaths from edema 19th-century British businesspeople