African is our race. Black is an ethnic identifier we call ourselves. It is unique to us, no other African ethnic groups used it as their ethnic identifier until we popularized it. Plus most don't even have "Black" in their language
Yes African is our "Race". (more precisely "Black African")
No we didn't start calling ourselves Black as an Ethnic Group, Whites Did: (Negro (Spanish), Niger(Latin)), (Before America).
We came into "America" as multiple different Ethnic groups.
Our Ethnic Identifier is not ONLY "Black".
It would be "African American", Some people prefer "ADOS", "FBA", or just "Black American".
Before that some of us considered ourselves as "Negro", "Colored" etc...
"Black" is a PHENOTYPE, just as "White" is.
"Black" is a collection of physical traits that originated on the African Continent.
There are Records Thousands of Years Old, of People Calling Africans (and Other Groups), Blacks.
There are Arabic documents calling Africans "Black", BEFORE the Trans-Atlantic Slave Trade.
There are Egyptian documents of people being refereed to as "A Black Man", or "A Black Woman"
Hell the Arabic Word "SUDAN" literally means "The Land Of The Blacks".
Before that we had the Greeks calling Africans and People who Resembled Africans as "Aethiopians" "Burnt Faces" AKA "Blacks".
So No we are not the "Only Blacks", we ARE however one of the first "Black" groups to Embrace the concept of "Blackness".
There are also Non-African, Black "Eurasians" like Melanesian(meaning "Black Islanders") , "Australoids", and "Negritos"(meaning "Small Blacks")