Hi. I was wondering why there are so many polygons with no name. Is it a missing data ? for exemple, east of the us, 1700 CE. sorry, it's not an issue, its' a question 
Hi.
I was wondering why there are so many polygons with no name. Is it a missing data ? for exemple, east of the us, 1700 CE.
sorry, it's not an issue, its' a question