The appropriate response is Valley Forge. It was not the best place to set up winter camp for the Continental Army, as it was not able to shield southern Pennsylvania at the time. This area additionally left the defenseless under-provided armed force in the striking separation of the British, who were very much provisioned and secured in Philadelphia.
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Plessy v. Ferguson ruled that "Separate but equal" public facilities were constitutional, thus permitting the practice of segregation under Jim Crow laws in the South and separate facilities for African Americans.
Therefore, the correct answer is C, that the decision allowed Southern states to legally segregate facilities and institutions.
Desiderius Erasmus lived during a time period of significant change in 1500's Europe. This rebirth, or awakening, was being felt around the known world. During this time period in Europe, a religious renaissance was occurring. The Catholic Church, which was once the one and only church with the Pope as its all powerful leader, was beginning to be challenged by "free thinkers" who opposed some of the traditions and ideals put forth by Catholicism. This time period was also a rebirth/renaissance in the areas of technology, science, arts, and philosophy. The introduction of gunpowder, for an example, forever changed human warfare and made battles more deadly than ever.
The alliance system was important and played in the events that led to WWI because countries that were in alliances with other countries were obligated to support their allies when war was declared.