1. Valeri Chkalov flew over the North
Pole in America in 1937
2. Christopher Columbus discovered
America in 1492.
3. Vladimir Lysenko has travelled round
the world.
4. Captain Cook made a sea trip round
the world twice in 1771 and in 1774.
5. Nikolai Przhevalski walked 35,000 km
across Central Asia between 1870 and 1873.
6. Yuri Senkevich has visited over a
hundred countries.