The Roman-Persian War was a 400-year-long war between Sassanian Persia and the Roman Empire for the East-West trade route and the hegemony of Asia Minor. This protracted war has almost always been accompanied by Sassanbos, which is a microcosm of the conflict between ancient western forces and eastern forces for more than 1000 years. As a result of the war, the Byzantine Empire (the Eastern Roman Empire) gradually declined, Sassanbos was defeated and soon perished under the iron hoof of the Arab Empire. As early as in the slave society, with the development of ancient Greek civilization and the civilization in the two river basins and the emergence of empires, there was a contest and struggle between western civilization represented by Greece and Asian eastern civilization represented by West Asia and Persia. Because West Asia is the border area between Europe and Asia, its strategic position is very important, so the war between eastern and western civilizations here lasted for a long time. In 5 14 BC, the Persian emperor Darius I led an army across the Bosporus and set foot on European soil for the first time. He ordered 600 warships to cooperate along the west coast of the Black Sea and reach the mouth of the Danube River. Although it was defeated in the grassland war to destroy the nomadic Scythians, it pushed the front to the Hellers Strait and Thrace in Europe, which not only controlled the Black Sea passage known as the lifeline of Athens, but also formed a potential attack on Athens from both land and sea. So in 500 BC, the famous Persian War broke out. In the half-century-long war, Persia was defeated in the famous "Marathon Campaign" and wiped out by Greece in the famous "Hot Spring Pass Campaign", but this war ended in the victory of Greece. The result of Persian-Persian war has had a far-reaching impact on the development of world history: the ancient eastern civilization developed on the east coast of the Mediterranean in West Asia, North Africa and Persia gradually merged (Egypt and Babylon are two centers, but they are almost the same), if Persia's westward journey is successful, the Mediterranean will become a single ancient civilization area, while the Greek civilization that has just dawned is worried about its premature demise; The victory of Greece formed the trend of confrontation between Greece and Poland. After the Greek civilization was introduced into Rome, it spread to Europe, forming a western civilization. Persia formed eastern civilization through rest, Sassanian and Islamic civilization. Just as the Persian Empire was on the decline, King Alexander appeared in Greece. His ambition was to destroy Persia and establish a Three Kingdoms Empire. In 334 BC, Alexander, who was only 22 years old, led an elite army across the Helegu Strait. As soon as he set foot on Asian soil, he defeated the Persian army. After Isus and Gauguin fought in Milla, the Persian Empire finally perished in 330 BC. At the same time, the kingdom of rest, established in 247 BC, rose rapidly, and by 1 century BC, it had become a Western Asian empire that could compete with the Roman Empire. In 65 BC, the Roman general Pompeii went to war with Rest, regardless of the outcome. Two years later, Krasus, commander-in-chief of Rome, was beheaded when he invaded the East, and he was laid to rest. The anti-aggression struggle of the oriental nation finally avenged the slaves of the Spartan uprising. After this campaign, Rome's eastward invasion and expansion was basically contained, and the rest of the west was basically maintained on the west side of the Euphrates River adjacent to Syria. Rest by Rome for hundreds of years has created conditions for the steady development of most parts of West Asia, especially the development of Sassanpolis and Islamic civilization. In 224 AD, the Persian aristocrat Aldahir destroyed the kingdom of rest and established the new Persian empire of Sassanian dynasty. Sassanbos inherited the tradition of solidarity with Rome and launched a tit-for-tat struggle with Rome on the borders of Armenia, Asia and Syria. In 23 1 year, Ardashir I sent a letter to Severus, the Roman emperor, demanding that the Roman army withdraw from Asia, and the 400-year-long Roman-Persian war officially began. In 232, Sassanbos fought against Rome, defeated the Roman army and won Armenia through a peace treaty. In 260, Sapol I fought against the Roman army, defeated the Roman army and captured the Roman emperor Valerian. Until now, there is still a cliff stone carving near Passepolis to commemorate this victory, which shows Valeriana kneeling on the saddle pad to make a huge relief for Sapol I. After this war, Sasan once occupied Capadocia in northeast Asia. However, during the period of the kingdom of rest, the dispute between Sassanian dynasty and Rome was like a tug-of-war. Roman emperors Diocletian and Constantine both led expeditions to Persia, but neither achieved remarkable results. In 286, Rome incited the Armenian uprising, and Sasan was forced to retreat, and later lost the land west of the Tigris River. After 375 years, the Roman Empire was busy with the invasion of Germanic barbarians such as Goths, and Persia was unable to continue to challenge Rome because of the invasion of Huns. In 476, the Roman Empire was destroyed by barbarians, and the Eastern Roman Empire continued to occupy the Balkans, Asia Minor, Armenia, Syria, Palestine, Upper Mesopotamia, Egypt, Libya and other regions with Constantinople as its capital. This is a great empire spanning three continents. In 487, Kobad I of Sassanbos came to power. He was overjoyed and dreamed of reappearing the glory of his distant ancestors. He commanded the alliance of Persians, Huns and Arabs to seize Upper Mesopotamia and Armenia from the Byzantine Empire. In 502, the allied forces besieged Amitabha city again, and after 80 days of fierce fighting, they captured the city, and then successively defeated the counterattack of the Byzantine army. In 505, the two sides made peace, and Byzantium recovered the city of Amida at the price of 1 1,000 Jin of gold. The two sides maintained their original borders and lived in peace for 20 years.