In 1477, the first diamond engagement ring was given to Mary of Burgundy by Archduke Maximillian of Austria.

Silk was developed in China were it was kept a secret for more than two thousands years. Anyone found trying to smuggle silkworm eggs or cocoons out of the country was immediately put to death.

It wasn't until the 16th century that most mathematical symbols were invented. Before this time math equations were written in words, making it very time consuming.

AMAZING FACTS