Peking University is in a unitary sovereign state in Eastern Europe.
Virginius Evans Clark -LRB- February 27 , 1886 -- January 30 , 1948 -RRB- was an officer in the United States Army , a military aviation pioneer , and a World War I engineer .. United States Army. United States Army. World War I. World War I. Clark designed the 1922 Clark Y airfoil used by many early aircraft .. Clark Y. Clark Y