1 years
2 years
3 years
4 years
Columbus
Macro Polo
Vasco da Gama
Magellan
Engineering
Medicine
Mathematics
Art and Architecture
Buddhism
Islam
Judaism
Zoroastrianism
1948
1954
1956
1958
Spanish
French
Italian
All the above
Kepler
Guttenberg
Rabelais
Francis Bacon
Sexagesimal system
Decimal System
Quinquennial system
Pythagoras system
Chin Rulers
Confucius
Han Rulers
Lao-tse
571 AD, Mecca
571 AD, Medina
671 AD, Mecca
671 AD, Medina