<span>The Royal Road helped the Persian Empire by uniting the empire, delivering mail, </span><span>and promoted trade and business throughout the empire. When the Royal Road united t</span><span>he empire everything started to happen, the delivered mail and the promotion of </span><span>trade and business. The Royal Road was for government purposes. When they mailed </span><span>letters, which needed a new horse every 15 miles, it took 7 days. The promotion letters, which needed a new horse every 15 miles, it took 7 days. The promotion </span><span>of trade and business was huge, it allowed the Persians to get more money.
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The Roman Empire's policy toward Christianity before and after the 313 Edict of Milan was Before it was illegal, and after the edict it became legal to practice.
<h3>What was the Edict of Milan?</h3>
Before the Edict of Milan, Christianity was an illegal religion in the Roman Empire which led to Christians being discriminated in heinous ways.
After Constantine the Great negotiated for the toleration of Christianity with the Edict of Milan, Christianity became a legal practice.
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Plate tectonics is the theory that explains how Earth's land masses are in constant motion. Before this theory was discovered, Alfred Wegener found out about the continental drift. Its the hypothesis of how the continents drifted over the ocean bed.
The continental drift led to the theory of plate tectonics. The main reason that led to the movement of the continents is because of the movement of the plates in the lithosphere.
Plates are massive, irregularly shaped slabs of solid rock, generally composed of both continental and oceanic lithosphere.
The intense heat in the Earth's core make the plates to move.
Humans can be affected by volcanic events, sea level rise, and earthquakes, all of which are related to plate tectonics.
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