Google Books Ngram Viewer

Graph these comma-separated phrases:
case-insensitive
between and from the corpus with smoothing of .  
Search in Google Books:

1800 - 1943 1944 - 1952 1953 - 1955 1956 - 1979 1980 - 2000 first world war English
1800 - 1863 1864 - 1917 1918 - 1920 1921 - 1962 1963 - 2000 the great war English
1800 - 1946 1947 - 1951 1952 - 1956 1957 - 1995 1996 - 2000 world war i English

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