id author title date pages extension mime words sentences flesch summary cache txt en-wikipedia-org-5543 Europe - Wikipedia .html text/html 25338 3459 71 The invention and implementation of new technologies resulted in rapid urban growth, mass employment, and the rise of a new working class.[154] Reforms in social and economic spheres followed, including the first laws on child labour, the legalisation of trade unions,[155] and the abolition of slavery.[156] In Britain, the Public Health Act of 1875 was passed, which significantly improved living conditions in many British cities.[157] Europe's population increased from about 100 million in 1700 to 400 million by 1900.[158] The last major famine recorded in Western Europe, the Great Famine of Ireland, caused death and mass emigration of millions of Irish people.[159] In the 19th century, 70 million people left Europe in migrations to various European colonies abroad and to the United States.[160] Demographic growth meant that, by 1900, Europe's share of the world's population was 25%.[161] ./cache/en-wikipedia-org-5543.html ./txt/en-wikipedia-org-5543.txt