How did moving the Roman capital to Constantinople affect the Eastern Roman Empire? The Eastern Roman Empire traded more with Rome.
The Eastern Roman Empire adopted Roman customs.
The Eastern Roman Empire became wealthy and powerful.
The Eastern Roman Empire had a greater connection to the West.

Correct answer is The Eastern Roman Empire became wealthy and powerful.

Explanation:

First option is not correct as the country was unified at the time and this event didn't change situation that much.

Second option is also not correct as customs of the Empire were already spread across the whole country.

Third option is correct as Constantinople had a great position that allowed trade and many other labors to develop, thus strengthening the Empire.

Last option is not correct as this connections were not affected much, as we have said.

c is the correct answer for this question.