JimLur, You are simply telling us you have a stupid birther friend.
As for the
"1. Back in 1961 people of color were called 'Negroes’. So how can the Obama 'birth certificate' state he is "African-American" when the term wasn't even used at that time ?"
A simple 30sec search gave me
The origin of “African American”
The term’s earliest known appearance in print is in an eighteenth-century sermon. By Fred Shapiro | Jan/Feb 2016
[...]
The Oxford English Dictionary traced its documented occurrences of “African American” back as far as 1835. (The related term “Afro-American,” which enjoyed a brief popularity in the 1960s, has an 1831 citation in the OED.) But last April, I did a routine search for the phrase in America’s Historical Newspapers, the Readex company’s very powerful database of early US papers, and was surprised to be led to a1782sermon published in Philadelphia. The sermon, whose only known surviving copy is at Harvard’s Houghton Library, was titled “A Sermon on the Capture of Lord Cornwallis.” The title page of the pamphlet includes the byline “By an African American.” .. https://yalealumnimagazine.com/articles/4216-the-origin-of-african-american
So how stupid do you and your friend look. Your friend and you obviously are hanging on to that crass and ignorant Trump pushed birther agenda.
It was Plato who said, “He, O men, is the wisest, who like Socrates, knows that his wisdom is in truth worth nothing”