How did Charlemagne improve European society? O He expanded government, which grew trade.
O He changed the law, which gave serfs freedom.
O He expanded the church, which improved education.
O He returned land to people, which helped them build cities.

Explanation:

Charlemagne has made many impacts on european society, for example... charlemagne expanded the reform program of the church that also strengthend(sorry if I spelled that wrong) the church's power structure and advancing the skill and moral quality of the clergy. Through these conquests Charlemagne united Europe and helped spread christianity worldwide. ( I came across this question at the same time I was reading about charlemagne in my textbook)

there is no image for me to refer

radioactive dating, also known as  radioisotope dating  is a process that in  estimating the approximate  age  of  rocks. these data can be analyzed from  the studies dealing with the  decay of the radioactive elements that are present in these rocks. in nature, there are a few types of materials or atoms which are quite unstable and they spontaneously decay or breakdown to form other kinds of atoms.