Question: Which period in German history came to an end thanks in part to material aid supplied to the Soviet Union by an Arctic convoy?

Context paragraphs:
Convoy PQ 5: Convoy PQ-5 was the sixth of the Arctic Convoys of World War II by which the Western Allies supplied material aid to the Soviet Union in its fight with Nazi Germany.  The Convoy sailed from Hvalfjord, Iceland on 27 November 1941 and arrived at Archangelsk on 13 December 1941.

Convoy PQ 2: Convoy PQ-2 was the third of the Arctic Convoys of World War II by which the Western Allies supplied material aid to the Soviet Union in its fight with Nazi Germany.  The convoy sailed from Liverpool on 13 October 1941 and arrived safely at Archangelsk on 30 October 1941.

Convoy QP 11: Convoy QP 11 was an Arctic Convoy of World War II, made up of merchant ships returning from the Soviet Union to Britain after delivering their cargo to the Soviet Union.  The convoy consisted of 13 merchant ships, escorted by 18 warships.  The convoy was attacked by German destroyers and submarines, suffering the loss of one merchant ship as well as the light cruiser HMS "Edinburgh".  The German forces lost the destroyer Z7 "Hermann Schoemann""."

Convoy QP 10: Convoy QP 10 was an Arctic convoy of World War II, consisting of empty merchant ships returning from the Soviet Union after delivering their cargo there.  The convoy consisted of 16 merchant ships and an escort of nine warships.  Six merchant ships from Convoy PQ 14 joined QP 10 partway through the voyage.  The convoy departed Murmansk on 10 April 1942 and arrived in Reykjavik on 21 April.  The convoy was attacked by German U-boats and aircraft, resulting in the loss of four merchant ships.  Another ship, "Stone Street" , was damaged by air attack and forced to turn back to the Kola Inlet.  The convoy's escorts shot down six German planes and damaged another during the course of the voyage.

Convoy PQ 7: Convoy PQ-7 was the eighth of the Arctic Convoys of the Second World War by which the Western Allies supplied material aid to the Soviet Union in its fight with Nazi Germany.  The Convoy was in two parts: PQ 7a sailed from Hvalfjörður, Iceland on 26 December 1941 and arrived at Murmansk on 12 January 1942.  PQ7b sailed from Hvalfjord, Iceland on 31 December 1941 and arrived in Murmansk on 11 January 1942.

Nazi Germany: Nazi Germany is the common English name for the period in German history from 1933 to 1945, when Germany was governed by a dictatorship under the control of Adolf Hitler and the Nazi Party (NSDAP).  Under Hitler's rule, Germany was transformed into a totalitarian state in which the Nazi Party controlled nearly all aspects of life.  The official name of the state was "Deutsches Reich" from 1933 to 1943 and "Großdeutsches Reich" ("Greater German Reich") from 1943 to 1945.  The period is also known under the names the Third Reich (German: "Drittes Reich" ) and the National Socialist Period (German: "Zeit des Nationalsozialismus" , abbreviated as "NS-Zeit").  The Nazi regime came to an end after the Allied Powers defeated Germany in May 1945, ending World War II in Europe.

Convoy QP 15: Convoy QP 15 was an Arctic convoy of World War II, consisting of empty merchant ships traveling to the United Kingdom after having delivered their cargo in the Soviet Union.  It was the last convoy in the "QP" series.  The convoy was scattered by a storm which sunk the Soviet destroyer "Sokrushitelny".  German U-boats attacked the convoy and sunk two out of the thirty merchant ships.

Convoy PQ 6: Convoy PQ-6 was the seventh of the Arctic convoys of World War II by which the Western Allies supplied material aid to the Soviet Union in its fight with Nazi Germany.  The convoy sailed from Hvalfjörður, Iceland, on 8 December 1941 and arrived at Murmansk on 20 December 1941.

Convoy PQ 4: Convoy PQ-4 was the fifth of the Arctic Convoys of World War II by which the Western Allies supplied material aid to the Soviet Union in its fight with Nazi Germany.  The Convoy sailed from Hvalfjord, Iceland on 17 November 1941 and arrived at Archangelsk on 28 November 1941.

Convoy PQ 3: Convoy PQ-3 was the fourth of the Arctic Convoys of World War II by which the Western Allies supplied material aid to the Soviet Union in its fight with Nazi Germany.  The Convoy sailed from Hvalfjord, Iceland on 9 November 1941 and arrived at Archangelsk on 22 November 1941.

Supporting paragraphs: Convoy PQ 6 Nazi Germany
Answer: Nazi Germany