If you mean the invasion in World War II under the Nazi-Soviet pact, it was certainly not because Poland was "weak." Poland had just defeated the Soviets in the Polish-Soviet War in 1919-1920. Instead, the Soviets, along with the Germans, wished to destroy all ethnic Poles. Stalin also held a grudge against the Polish for his court-martial after the Polish-Soviet war. The Soviets were responsible for nearly as many deaths as the Germans, and they didn't respect the rights of POWs.
Germany's weak economy that resulted from war reparations from world war on (this made it hard to raise support, and to get his army together)the soviet union did not want Germany to invade Poland because it would mean that Germany had a strategic spot if they ever wanted to invade russia. (Poland is right next to Russia.) so the soviet union tried to persuade the europeans to stop them, but the europeans stayed neutral, fearing another world war.
Russia was old fashioned and weak- it collapsed because it was unsuitable.
Allied. The Nazis wanted Poland because it was a weak link in their power conquest.
Lithuania's government had a good relationship with USA, so therefore USA 'asked' Russia to stop fighting against rebels in Lithuania. Russia 'agreed' because it didn't want to look like a bastard by invading small and weak country compared to Russia. Last attempt to invade Lithuania was on 1991 January 1, however, unsuccessful.
Poles and Russians are old long-term enemies who have fought a number of wars over the last 1000 years. Poland and Russia fought a number of battles and skirmishes in the 13th to 16th centuries and Russia participated in the three partitions of Poland which resulted in Poland disapering from the map of Europe in 1795. When Poland reapeared after WW1 Soviet Russia took advantage of Poland's initial weak situation and attacked Poland resulting in a prolonged war which finished in 1920. Russia attacked Poland again on 17 September 1939 as part of the Nazi-Soviet pack against Poland which started WW2. Russia has committed a number of attrocitied against Polish nationals including the 1940 Katyn messacre of over 20,000 Polish officers and intellectuals which was designed to wipe out Polish national identy and facilite Russification of Polish population occupied by the Russians during WW2.
It helped Russia's weak economy to recover
Poles and Russians are old long-term enemies who have fought a number of wars over the last 1000 years. Poland and Russia fought a number of battles and skirmishes in the 13th to 16th centuries and Russia participated in the three partitions of Poland which resulted in Poland disapering from the map of Europe in 1795. When Poland reapeared after WW1 Soviet Russia took advantage of Poland's initial weak situation and attacked Poland resulting in a prolonged war which finished in 1920. Russia attacked Poland again on 17 September 1939 as part of the Nazi-Soviet pack against Poland which started WW2. Russia has committed a number of attrocitied against Polish nationals including the 1940 Katyn messacre of over 20,000 Polish officers and intellectuals which was designed to wipe out Polish national identy and facilite Russification of Polish population occupied by the Russians during WW2.
Because the country is still linked to Russia's weak economy. :)
Russia isn't a Weak Country. it is Very Strong Country
The Lithuanian-Polish commonwealth declined for a number of reasons. The biggest one was the inability of the Parliament to make any reforms or pass any meaningful laws (apart from the 1st constitution in Europe), mostly because of the veto right. Another one was poor economy because of serfdom. Lastly, Russian influence.
Germany didnt capture russia cause russia was too good and smart for Germany. they started attacking russia but russia just kept running away and burning down all the houses and food so the Germans didnt have anywhere to stay and it was very cold and they ran out of food but coulnt get more because the Russians had burned it all so the Germans all starved to death or froze and the ones that were left were really weak so the Germans killed them easily
no they are slightly weak than china they b cant invade china but they can easily defend their India