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The Answer To This Question Would be "B" the assassination of Archduke Franz Ferdinand and his wife, Sophie
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Answer:
Knights were professional warriors who helped nobles protect their land.
It was primarily the Industrial Revolution that caused the nations cities to grow in population at the end of the nineteenth century, since this brought about the creation of a massive amount of factories, all of which required large number of laborers who almost all lived in the cities.
The Answer To What Happened At Dunkirk In The Spring Of 1940 Is:
~Hundreds of Thousands Of Troops Were Rescued From The German Advance In The Nick Of Time.
~The Troops Were Desperately Needed Back On The Home Shores To Help Defend Against A Nazi Invasion.
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Many people argue that the Cenozoic era should not be called the "Age of Mammals" because there were many other species, such as birds and insects, and many plants were as numerous as mammals were at the time. So they argue the name of the era giving reasons such as these - why should it be named after mammals when there were other animals and birds and plants roaming the Earth as much as they did?