devtools::install_github("oobianom/r2country")
install.packages("r2country") 
data(country_calling_code) # calling code for countries
data(country_population) # population by year for countries
data(city_time) # time by city
data(country_names) # country names
data(country_money) # countries currency
data(country_language) # country language
data(country_capital) #country capitals
data(country_continent)# continent countries
# get all countries
countries
#or
COUNTRIES
# direct functions
             
countryEndsWith        
countryHas             
countryStartsWith       
languageEndsWith       
languageHas            
languageStartsWith     
# lists to call
callingCodeOf          
capitalOf              
continentOf              
currencyOf             
languageOf             
populationOf          
timeIn  
``` some examples at r2country.obi.obianom.com