The Huns
The main goal was to create a buffer zone between the Soviet Union and Western Europe
Dairy and Wheat
Western Europe produces more oil than Eastern Europe. The main oil supplier in Western Europe is the North Sea, while it's the Black Sea and the Caucasus in Eastern Europe.
The two main countries in western Europe are Germany and France. It would not be totally accurate to say that they dominate western Europe. There are other large and important countries there too.
Catholic, Muslim, Buahism
There was only 1 main purpose D-Day. That was that it was the beginning of the Allied campaign on the Western Front to regain control of western Europe and to push for Germany. That is why D-Day would be considered a turninf point of WW2 in Europe on the Western Front.
The four main parts of Europe are Western Europe, Southern Europe, Eastern Europe, and Northern Europe. They are defined based on geography, culture, and history. Each region has distinct characteristics and countries that form part of it.
Well there are only four main climate zones in Europe, so if they are not a part of the list, then they are not a main climate zone in Europe. The main climate zones are Mediterranean Climate, Continental Climate, Oceanic Climate, and Subarctic Climate. These climate zones may also be expressed as regions: Southern Europe, Eastern Europe, Western Europe, and Northern Europe.
There is no short answer to this question. Main linguistic regions are: scandinavian, germanic, romanic, slavic. Main religious regions are: catholic, protestant, orthodox, muslim. Main alphabetic regions are: latin, cyrillic, greek. Main climatic regions are: arctic, boreal, continental, alpine, atlantic, mediterrenean. Some of these regions overlap. Some of the borders delimiting these regions cut right trough some countries. Belgium: germanic-romanic, Germany: protestant-catholic, France: atlantic-continental-mediterrenean, etc... Depending on the criterion you use, you get different cultural regions of Europe. There are no clear regions.
Industrialization
About 50 kilometers (31 miles).
There are many places called Dublin in the world, but the main one after which others are called is in Ireland, which is in the continent of Europe.