I believe you mean the Molotov - Ribbentrop Pact. Its was the Pact of nonaggression between Soviet Russia And Hitler's Germany. They Signed this treaty for both large and powerful nations at the time to agree on conquestable lands (Poland and Other Baltic Countries). But it was still more of a Non-aggression until Hitler broke it and started War Against Soviet Russia, Which was a very bad move.
<em>"Britain acknowledged the independence of the United States"</em> is a political effect. This meant, that the British Empire would not have any interference in the public policy of the territories of the newly formed country.
<em>"Countries that participated in war agreed to repay debts to one another"</em> is an economic effect. The monetary compensation for the effects of war would bring affect the budget of the newly formed country. This was an important issue, as the Continental Congress had issues collecting taxes from the states during the war and had to issue bonds. It would take time for the country to recover economically.
<em>"The war opened up discussion about racial equality"</em> is a political effect. This discussion was the first in a series of events that would lead up to the Civil War between the Union and the Confederate States".
Answer:Deforestaion is a challenge for the world today because we are cutting down more and more trees which is limiting our oxygen supply and is creating less homes for animals and is also killing animals. we can fix this problem by lowering our demand for wood and using other natural resources like steel instead of wood.