What is a key difference between presidential and parliamentary
democracies?

A key difference between presidential and parliamentary systems lies in removing a chief executive or dissolving the legislature. In parliamentary systems, the chief executive's term of office is directly linked thereto of the legislature, while in presidential systems the terms aren't linked

Explanation:

wood carving remains today the primary sculptural art form of the sub saharan continent. african art history shows the earliest wooden sculptures from the 17th c are attributed to the kuba, central zaire but the earliest surviving sub-saharan sculpture is a zoomorphic head found in 1928 in central angola.

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in 550 b.c.e. cyrus the great, the leader of the persians, conquered the medes and united the iranian people under one ruler for the first time. cyrus became the first king of the persian empire and went on to establish one of the largest empires in world.