What features allowed Constantinople to become a prosperous city?

In the 4th century, under the rule of the Roman emperor Constantine, the city was reformed and named Constantinople.

Byzantium's location, between Asia and Europe, allowed it to have an intense commercial development.

Far Eastern products, such as silks, spices and ivory, were resold in Western Europe, along with local products (fabrics, jewelry, fine crafts). This great movement attracted traders of all nationalities to the city.

Constantinople became the "capital of the East", housing a huge population, although the Byzantine Empire had other large cities, such as Nicaea, Antioch, Salonica or Alexandria. Some of them were located in fertile regions and produced important agricultural items, such as wheat, or grapes for wine production.

The political organization had as its greatest expression the figure of the emperor, who, aided by countless officials, commanded the army and led the Church, which called itself orthodox. The emperor was, therefore, very powerful and considered a representative of God on earth.

this null effect is caused by a weak manipulation and ineffective internal validity. in a scientific study, as the one dr. morimoto is trying to perfom, internal validity refers to the confidence placed in the cause-effect relationship and to how well an experiment is done and able to eliminate confounding variables.        

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clean air is essential for health and survival

clean air provides nitrogen gas for plant respiration

clean air supplies oxygen that enables living organisms to breathe

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sorry if this doesn't