It would be the "A. Continental System" that refers to Napoleon's blockade of British goods, since this was meant to increase production and profits in mainland Europe.
The answer would be D. enslaved people in the rebelling states are free
Stalin knew the end of the fight against Germany would free up his vast armed forces to invade Japanese-held territory in Asia, such as resource-rich Manchuria. The USSR declared war after the Hiroshima bombing but before the Nagasaki bombing. It's intention was clearly to grab territory before Japan surrendered
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!