6. Give reasons. a) Inscriptions are a treasure house of historical data. b) The medieval period of Indian history witnessed the rise and fall of several dynasties.​

a) The inscriptions provide us valuable information which could not be tampered or modified. Thus inscriptions are the most important sources for constructing the history of a particular region. Inscriptions are more important than coins in historical reconstruction.

b)Most of the kingdoms of the medieval period rose to power and fell frequently. This was because most of the kingdoms, empires were constantly engaged in power struggle amongst themselves.

the answer is:

c. islam and christianity

explanation:

islam and christianity are widely practiced in africa. islam is practiced due to its spread from the middle east into africa, and christianity is practiced due to the colonization of africa by the british empire.