These are the independent states in Gleditsch and Ward's data.
gw_statesA data frame with 216 observations on the following 5 variables.
a numeric vector for the Gleditsch-Ward country code
a character vector for state abbreviation
a character vector for the state name
the start date in the data
the end date in the data
Data originally provided by Gleditsch with no column names. Column names were added before some light re-cleaning in order to generate these data. "Wuerttemberg" and "Cote D'Ivoire" in the statename column needed to be renamed to ensure maximal compliance with CRAN, which raises notes for every non-ASCII character that appears in its package. I do not think this to be problematic at all and, after all, state names should never be a basis for something like a match or merge you would do in countrycode .
Gleditsch, Kristian S. and Michael D. Ward. 1999. "A Revised List of Independent States since the Congress of Vienna." International Interactions 25(4): 393--413.
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