After the Mongols withdrew from Kievan Rus' and Fail, Kiev was no longer able to restore the "glue" of the Rus' nation of the past, on the one hand, the Northern Rus gathered near Moscow and gradually evolved into a Russian nation; on the other hand, the Southern Rus' approached the Danube River, with a new economic center, and the fusion of some foreign ethnic groups formed the Ukrainian nation.
The Mongols sat in Kiev and marched hard against Eastern Europe, destroying corruption and decay, and being invincible. Southern Rus was under maximum pressure, providing a steady stream of supplies to the Mongol army. And Northern Rus had a wise monarch named Alexander. Nevsky. Nevsky was a hero with a superb commanding art, defeating the Swedes and Germanic invasions many times and ensuring the integrity of northwestern Rus'. In the face of the Mongol army, Nevsky was able to soberly understand the current affairs, put down his posture, and endure humiliation and burden to help the Mongols rule the northern Rus, because of his reconciliation, the life of the northern Rus was relatively better than that of the southern Rus, and made great contributions to the future Russian nation, and because of this, Stalin later announced Alexander. Nevsky is a national hero.
Southern Rus' lived a miserable life under the pressure of the Mongols. At that time Kievan Rus had a Galician-Volinian kingdom, close to Eastern Europe, bordering the Black Sea and the Danube Valley to the south. In order to fight the Mongols, Galicia-Volinia contacted the Pope, and the Catholic Church began to introduce Kievan Rus' in. This move provoked great indignation in the Orthodox Church, which considered it a rebellion and vowed to be at odds with the Western Thief.
At this time, the southern Rus' region was chaotic, almost becoming a "refugee camp", where people fleeing from all sides gathered, including Poles, Rus', Germans, Turks, Tatars, etc., who were brave and fearless, and slowly formed Cossack groups.
The Polish nobility used cossacks to rule, implementing "registered Cossacks", and recognized Cossacks could receive a lot of money without paying taxes and welfare. These Cossack mercenaries were overwhelmed by their combat effectiveness and had many rounds with the Russians. Later, Poland gradually declined, and the Cossacks fell out with them without a salary, and an uprising broke out.
The leader of the uprising, Khmelnytsky, established the Ukrainian Cossack Emirate, Poland counterattacked, Khmelnytsky could not resist, turned to the Tsar, the Russians drowsy and sent a pillow--- it was the right time, so they gladly sent troops, and ukraine was branded with Russia from then on, until the modern union of the Soviet Republic.
However, the complexity of the Ukrainian nation, the dispute between the Orthodox Church and the Catholic Church, made it difficult for Ukraine to stand alone, so it had independence after the collapse of the Soviet Union, but after independence, it was subject to the splint of the great powers.
Russia and Ukraine are both blood-linked and bitter, divided and united, entangled, and chaotic.
