Which set of ideas did Alexander the Great spread throughout Europe and to areas in the east?

A.its practice of trading with other parts of the world ----- My answer
B.a rising middle class that could read and write
C.disorder caused by a large slave revolt
D.the large and increasing size of the empire

I agree with you about A.

The correct answer is D. the large and increasing size of the empire. Alexander the Great, the ancient Macedonian king and military conqueror, is known for spreading his empire across Europe, Asia, and Africa. His empire stretched from Greece to Egypt, Persia, and even parts of India. By conquering various regions and establishing his rule, Alexander spread his ideas of a unified empire throughout the lands he conquered. These ideas included his military strategies, administrative systems, and cultural influences. As he expanded his empire, he also sought to spread Hellenistic (Greek) culture and influence, which had a lasting impact on the regions he conquered. So the correct answer is D.