Which ruler greatly expanded the kingdom of franks and created a vast empire AD 800?

A pepin the short

B Clovis

C Leif Erickson

D carelmagne

The correct answer is Option D) Charlemagne

Explanation:

Also known as Charles the Great. He was a the King of Franks. He is sometimes called the 'Father of Europe' as he greatly expanded his Empire and unified Western Europe for the first time since the fall of the Roman Empire.

By the Year 800 AD he had created the largest medieval Empire in Europe that expanded over modern Germany, France, Spain, Belgium and Italy. After a few years he was able to annex parts of Central Europe and formed dynastic rule that would last until 888 AD.