Final answer:
A dynasty refers to a series of rulers from the same family who hold power over a particular region or country.
Step-by-step explanation:
The correct answer is a. Dynasty.
A dynasty refers to a series of rulers from the same family who hold power over a particular region or country. It is a term commonly used in history to describe the ruling families of ancient civilizations, such as the Ming Dynasty in China or the Ptolemaic Dynasty in Egypt. Dynasties often pass power down through hereditary succession, where leadership is inherited within the same family.
Learn more about Dynasty in history