Why did hitler allow soviet troops to occupy eastern poland after he took control of the land?

On this day in 1939, Soviet Foreign Minister Vyacheslav Molotov declares that the Polish government has ceased to exist, as the U.S.S.R. exercises the “fine print” of the Hitler-Stalin Non-aggression pact—the invasion and occupation of eastern Poland.

Explanation:

Hitler’s troops were already wreaking havoc in Poland, having invaded on the first of the month. The Polish army began retreating and regrouping east, near Lvov, in eastern Galicia, attempting to escape relentless German land and air offensives. But Polish troops had jumped from the frying pan into the fire—as Soviet troops began occupying eastern Poland. The Ribbentrop-Molotov Non-aggression Pact, signed in August, had eliminated any hope Poland had of a Russian ally in a war against Germany. Little did Poles know that a secret clause of that pact, the details of which would not become public until 1990, gave the U.S.S.R. the right to mark off for itself a chunk of Poland’s eastern region. The “reason” given was that Russia had to come to the aid of its “blood brothers,” the Ukrainians and Byelorussians, who were trapped in territory that had been illegally annexed by Poland. Now Poland was squeezed from West and East—trapped between two behemoths. Its forces overwhelmed by the mechanized modern German army, Poland had nothing left with which to fight the Soviets.

As Soviet troops broke into Poland, they unexpectedly met up with German troops who had fought their way that far east in a little more than two weeks. The Germans receded when confronted by the Soviets, handing over their Polish prisoners of war. Thousands of Polish troops were taken into captivity; some Poles simply surrendered to the Soviets to avoid being captured by the Germans.

"a government in which power is divided between state and national levels". federalism is a system of government in which entities such and state and province, share power with the national government.

after the civil war, and with the termination of slavery, the south was faced with a big problem; what was supposed to happen and how they were supposed to deal with the freedom and the rights that black people and freed slaves had gained as a result of the north defeating the south and forcing the end of slavery. first, most, if not all, of the workforce of the south came from slaves and they did not have an option to replace the loss of said workforce. second, particularly in the south, people were convinced that black people were lesser, less intelligent, less capable and less smart than whites. this posed a huge problem for them. also, southerners were faced with another issue; freed slaves now had a say in how their lives would be lived and the right to politically choose the way they would be governed. people in the south did not want to accept this, none of this and this opposition and the conflicts that arose from it, not to mention the afereffects of the war, forced the congress of the time to enact and enforce the reconstruction plans that had been proposed by president andrew johnson.