What did the sumerians have that helped with trade

The Sumerians have that helped with trade by trading goods from fine textiles to sturdy, nearly mass-produced pottery made in temple workshops to leather goods, jewelry, basketry, and ivory carvings.

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.

i hope this .

c, because the american revolution was from 1765 to 1783.