What territories became part of the Frankish state under Charlemagne?

When Charlemagne ruled from 768 to 814, the empire of the Franco state included the territories (lands) of states that are currently in West Germany, Northern Italy, Northern Spain, France. Under Charlemagne, the empire became strong (due to numerous wars), and Charlemagne himself was recognized as the successor of the Roman emperors. Thus, the empire of Charlemagne included an impressive part of France, Germany, Italy and Spain. The name Great Charles received after his death from his descendants. Less than 100 years later, Karl’s relatives destroyed Karl’s empire. Finally, the empire created by Charles was subsequently destroyed by Napoleon.