The correct answer is C) The city's location allowed the emperor to control both land and sea trade routes between Europe and Asia.
The statement that explains how the location of Constantinople contributed to the city's success as the new capital is "The city's location allowed the emperor to control both land and sea trade routes between Europe and Asia."
Constantinople was the capital city of the Byzantine Empire. It was located in what today is Istambul, Turkey. It was a privileged location that connected Eastern Europe with Western Europe and the Middle East. Vey important trade routes crossed by Constantinople. The city was very cosmopolite where different races and ethnicities were part of the trade transactions that characterized this city during the glorious years of the Byzantine Empire.