But the origins of the Crimean War cannot be understood by studying only the motives of statesmen and diplomats. This was a war – the first war in history – to be brought about by the pressure of the press and by public opinion. With the development of the railways enabling the emergence of a national press in the 1840s and 1850s, public opinion became a potent force in British politics, arguably overshadowing the influence of Parliament and the cabinet itself.