• **1202** ⪢⪢

At the same time, a fourth crusade, initially sent to the Holly Land, is diverted to Constantinople. The city is besieged and then pillaged. The Byzantine Empire finds itself divided and Kievan Russia loses an important ally. ￫ divert, besiege, pillage

http://qindex.info/i.php?x=17650

At the same time, a fourth crusade, initially sent to the Holly Land, is diverted to Constantinople. The city is besieged and then pillaged. The Byzantine Empire finds itself divided and Kievan Russia loses an important ally. ￫ divert, besiege, pillage

http://qindex.info/i.php?x=17650

• **1202** Leonardo Fibonacci

Fibonacci asked himself how many pairs of rabbits originated from a single pair in one year. Each pair of rabbits will produce exactly one more pair of both sexes per month which in turn would be fertile from the second month after birth.

http://qindex.info/i.php?x=4759

Fibonacci asked himself how many pairs of rabbits originated from a single pair in one year. Each pair of rabbits will produce exactly one more pair of both sexes per month which in turn would be fertile from the second month after birth.

http://qindex.info/i.php?x=4759