The movement of goods from the port of Marseilles to London is as follows:
For Hanseatic: One has to start at Marseilles then go through Lyons, Paris, Cologne, then finally to Bruges and then they will reach London.
For Venetian: The trade route starts at Marseilles to Valencia, Cadiz, and then sail through the Atlantic Ocean and reach London.
In 1945, after the defeat of Nazi Germany, Poland's borders were redrawn in accordance with the decisions made first by the Allies at the Tehran Conference of 1943 where the Soviet Union demanded the recognition of the military outcome of the top secret Nazi–Soviet Pact of 1939 of which the West was unaware. Hope this helps :)
1) They mostly spread Islam through conquering new countries. What they did also was unite all people under a single rule and ended religious uprisings.
2) There was tensions because one faction believed that Muhammad should be succeeded by someone chosen by people, while the other faction believed that his successor should be someone from his bloodline.
