It allows people worldwide to identify the same species.
Answer:
The Persian Empire entered a period of decline after a failed invasion of Greece by Xerxes I in 480 BC. The costly defense of Persia's lands depleted the empire's funds, leading to heavier taxation among Persia's subjects
Answer:
The country had fewer jobs available for immigrants to take.
Explanation:
After the economy suffered heavy losses from World War I, many businesses were closed down from bankruptcy, this led to a shortage of jobs.
The Revolution led to the establishment of a democratic government for the first time in Europe. Feudalism as an institution was buried by the Revolution, and the Church and the clergy were brought under State control. It led to the eventual rise of Napoleon Bonaparte as the Emperor of France.