The correct answer is letter D. an economy based on trade. The people who migrated to Melanesia developed <span>an economy based on trade. Before the time of currency was used, people back then do trading with their property they own if they want to have something. It's like the same as the barter system or the barter economy.</span>
<span>With the start of the second World War and a swift succession of German victories, the Nazi regime began realizing its longstanding goal of territorial expansion. Under conditions of war and military occupation, they could pursue racial goals with more radical measures. The German Army, military, SS, and German police units took an active part in authorized mass murders of Jews in the Soviet Union. The Germans and their collaborators deported roughly 2.7 million Jews and others and from occupied Europe to killing centers in German-occupied Poland. At the largest of the camps, Auschwitz-Birkenau, transports arrived from all across Europe. The camps of Majdanek and Auschwitz were the first liberated, as Soviet troops reached Poland. As more Allied soldiers saw the camps with their own eyes, the truth was undeniable.</span>
The Baltic states are on the eastern edge of the Baltic sea. The correct option among all the options that are given in the question is the first option or option "a". Estonia, Latvia and Lithuania are parts of the Baltic states. I hope that this is the answer that has come to your great help.