• 0850 ± ⪢⪢
To the south is the powerful Byzantine Empire with its capital Constantinople, an important commercial crossroads between East and West. The city is attractive and interest
s some Vikings also known as the Varangians.
• The Poincare Conjecture
In the early 1900s mathematicians and physicists were very interest
ed in the shape of space. New experiments and theories were being developed that would ultimately create relativity theory and change our entire view of the universe.