How did King Nebuchadnezzar II improve the Babylonian Empire? O He expanded education.
O He defeated the Persians.
O He created a new code of law.
O He built new irrigation systems.

O He built new irrigation systems.

Explanation:

Indeed,  King Nebuchadnezzar II improved the Babylonian Empire during his reign (624-582 B.C.E.). He was involved in many building projects that were not available prior to his reign. One such building projects was the new irrigation systems he built.

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explanation:

the precambrian aged rocks could be found in australia. australia is a region that has a lot of ancient civilization history from million years ago. in this region, there are a lot of recognizable fossils buried in its land which is considered a precambrian-aged rocks