Simplify the following text for a Grade 7 native English-speaking person.
Original: The Han Dynasty was considered as a classical period in Chinese civilization , in that it was able to expand its power and influence over Central , Southeast Asia and Northeast Asia , and come to rival its contemporary Roman Empire in population , territory , wealth , and power .
Simplified: Also , the Han Dynasty is said to be the high point in Chinese civilization . During the Han Dynasty , China was able to increase its power and influence to other parts of Asia .