Which of the following innovations was discovered during the gupta empire in india

The following innovations were discovered during the Gupta Empire in India are the Iron Pillar that is made in metallurgy, the Aryabhatta and Varahamihira which belongs in modern science aspect, the decimal system notation in mathematics, the usage of mercury and iron in medicine. These are some of the innovations discovered by Gupta Empire in India.

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 .

it's lower nubia : ) good luck