The akkadians establish the world's first empire. Nebuchadnezzar rules the Neo-Babylonian Empire. Ancient Sumer develops self-governed city-states. King Hammurabi creates his code of laws.

The timeline is given below:

A. Ancient Sumer develops self-governed city-states, B. the Akkadians establish the world's first empire, C. King Hammurabi creates his code of laws, D. Nebuchadnezzar rules the Neo-Babylonian Empire.

Explanation:

First towns and cities developed in Sumer around 5000 BC. In or around 4000 BC Sumer established powerful city-states with large Ziggurats as the temples for their gods.

The Akkadian conquerors under the leadership of Sargon I conquered most of the Sumerian city-states in 2330 BC and formed the Akkadian Empire world's first empire.

Following this, Hammurabi became the king of Babylon in 1792 BC was one of the major events in the history of the world. He was the one who established the Code of Hammurabi throughout his empire. Following the death of Hammurabi, the first Babylonian Empire began to fall.

Nebuchadnezzar II became the king of Neo-Babylon after the death of Nabopolassar, in 605 BC. He was the most important ruler to bring the Neo-Babylonian Empire to its peak.

d and a is the correct anwsers

explanation:

he government should regulate the economy