GENERAL KNOWLEDGE: With which form of transport was Otto Lilienthal associated?

Questions

In 1988 Soviet Union agrees to allow teaching of---------- . ?

In 1992 Bill ---------- elected US President. ?

In 1854 Lighthouse established on ---------- Island. ?

In 1879 James Ritty patents the first ---------- register, to combat stealing by bartenders in his Dayton, Ohio saloon. ?

In 1922 Howard Carter discovers the tomb of---------- . ?