Why do you think about Nikola Tesla as about Serbian-American inventor? He was member of Austro-Hungarian monarchy greek-eastern church, as well as his father. Manipulation of that fact can not change documents in archive and documents about Nikola Tesla school in Kingdom of Croatia, Slavonia and Dalmatia with Croatian Militay Border under Austro-Hungarian monarchy. In that time serbian orthodox church does not exist, especially not in state under strong authority of Austrian & Hungarian crown.
Both his parents were Serbian so ethically, Tesla was a Serb. Yes, during Tesla’s time, Smiljan (the place he was born) was part of the Austro-Hungarian Empire. Croatia wasn’t even a country until 1991, so obviously Tesla never claimed he was Croatian because that just wasn’t a thing to him, but in a quote below he says he was born in Croatia. Tesla lived a majority of his life in America–moving to the U.S. in 1884, at the age of 28, and became a citizen in 1891. That’s 59 years in America, and 52 years an American citizen. Also, I must add, before becoming an American citizen Tesla introduced himself on his patents as “a subject of the Emperor of Austria-Hungary, from Smiljan, Lika, border country of Austria-Hungary.” So technically, Austro-Hungarian/Croatian/Serbian/American are all applicable in different contexts.
“There is something within me that might be illusion as it is often case with young delighted people, but if I would be fortunate to achieve some of my ideals, it would be on the behalf of the whole of humanity. If those hopes would become fulfilled, the most exciting thought would be that it is a deed of a Serb. Long live Serbdom!” –Nikola Tesla (Address at the Belgrade train station. June 1, 1892.)
“The papers, which thirty years ago conferred upon me the honor of American citizenship, are always kept in a safe, while my orders, diplomas, degrees, gold medals and other distinctions are packed away in old trunks.” –NT (“My Inventions V – The Magnifying Transmitter,” 1919.)
“I was born in Croatia. The Croatians and Slovenes were never in a position to fight for their independence. It was the Serbians who fought the battles for freedom and the price of liberty was paid in Serbian blood. All true Croatians and Slovenes remember that gratefully. They also know that the Serbians have an unequaled aptitude and experience in warfare and are best qualified to direct the forces of the country in a crisis.”–Nikola Tesla (“A Tribute to King Alexander.” New York Times, Oct. 21, 1934.)