Why was the Lusitania a symbol of progress?

Did Peter the Great free the serfs yes or no? What Roman Emperor conquered the province Dacia? What does 'justice delayed is justice denied' mean? Who was the former slave that led the Exodusters in the 1870s? What piece of legislation autorized a civil government in Puerto Rico and formally established it as a us territory? What was London like before the great fire of London? In the autobiography why does Franklin rank his virtues in the order he does? What is Rulers of the spanish territories in the new world were know as? What did the leaders of the Soviet Union feel would provide the most protection of their country? Who was the leader of the allied invasion of France? When and where did baseball player Guy Cantrell die? What was the North's initial strategy in winning the civil war? Do think president McKinley could have taken a different course of action with Spain over Cuba? How did Mesopotamia deal with unpredictable rivers? What day was January 23 1964? Who was president when a wave of European immigrants flooded US shores? Did the US ever fight in Cambodia? What was Dr. king's nickname as a child? What is a Caeser shift? What are the different materials in the library?