matter

Matter is what the universe is built of. Matter comes in three forms: Solid, Liquid and Gas.
Also see: antimatter

The opposite of matter is antimatter.
Our universe is built of matter

Dog

Canis Lupus Familiaris, the scientific name of a dog. Dogs are animals and have lived since the Late Pleistocene(unofficial time period and also known as Upper Pleistocene). So basically nobody knows exactly when the first dogs came into existence. However we do know that dogs(Canis Lupus Familiaris) coexisted with humans. The first dog that was domesticated was way after that, in northern Siberia(now freezing cold Russia) 23000 years ago.

The dog ate the meat.
Did you know that dogs are also known as Canis Lupus Familiaris?

Mongol Empire

The Mongol empire was one the biggest empires in history. It was born in 1206 and hit its peak in 1309, but began starting to fall as other countries became richer, and then in 1368, it finally fell to its death and it just became a single country named Mongolia. You may hear about Temujin, who is just Chinggis/Genghis Khan disguised.

The Mongol Empire was the biggest empire in history!
The Mongol Empire exploded when Temujin was born.