Google Books Ngram Viewer

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

1800 - 1934 1935 - 1946 1947 1948 - 1983 1984 - 1997 soviet occupation English
1800 - 1851 1852 - 1858 1859 - 1861 1862 - 1961 1962 - 2000 period of annexation English

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