1) Washington D.C., United States(U.S.)
2) Rio de Janeiro, Brazil
3) Beijing, China
4) Berlin, Germany
Explanation:
4th BRICS-Young Scientist Forum (YSF), 2019 held from November 6-8,2019 in Rio de Janeiro, Brazil. The theme for 4th BRICS-YSF was “Cybersecurity and Bio economy”.