I would say that World War Two is a continuation of World War One because without Germany losing World War One Hitler would not have been able to take power in Germany. Another reason would be that without World War One Mussolini would not have had the right political climate to take power in Italy.
Performance goals are used to help you make a better performance, e.g.(Speak clearly,). Hope I helped.
Answer:
Belgium wouldn't allow Germany passage through their territory.
Belgium wanted to remain neutral to both sides and allowing Germans passage to France was not remaining neutral to France.
Germany invaded France because they had declared war on them but when invading Belgium to get into France, they broke the treaty of London which is why Great Britain entered the war.
France was allied with Russia which is why Germany declared war against them. Hitler wanted to rule Russia and expand its empire, since France sided with Russia to defeat the expansion, Germany called for a war against them, thus pulling France into WW2.
Hope this helps!