Which statement is correct about the development of civilization in ancient Mesopotamia? Hammurabi united the majority of Mesopotamia in 4000 BC.
Alexander the Great conquered the Persian Empire in 2000 BC.
Cuneiform writing became widespread in 2400 BC.
Mesopotamia became part of the Persian Empire in 3500 BC.

The correct answer is C

Mesopotamia is known as the “cradle of civilization” mainly by the invention of writing (which is known as Cuneiform writing) in the region of Sumer.

Cuneiform is a system of writing first developed by the ancient Sumerians of Mesopotamia between 3500 and 3000 BCE, its name comes from the Latin word cuneus for 'wedge' due to the wedge-shaped style of writing.  

All of the great Mesopotamian civilizations used cuneiform until it was changed by the alphabetic script at some point after 100 BCE.

there are no mutiple choices here

the conditions that made the byzantine empire vulnerable to attacks by the muslin turks were the sack of constantinople by western crusaders, the conquests of the sultanate of rum, presence of rival kingdoms and finally the set up of fiefdoms at the empire which were owned by the ghazis (turkish warriors).