The main objectives of the Progressive movement were addressing problems caused by industrialization, urbanization, immigration, and political corruption. Social reformers were primarily middle-class citizens who targeted political machines and their bosses.
I believe it was the use of poisonous gasses, which they not only used on the Jews but in war too......., or The newly created Machine gun<span />
Answer: In a sense they were snobbish, the only reason for colonization was gold and to spread their faith to the Native Americans. In the attempt to do that most thought of the natives as savage and nonhuman. They believed themselves as the predominant race and the owners of the land the natives lived on. Many were greedy and only thought of what they could gain without thinking of the consequences of their actions.
Explanation: millions of Native Americans died not only from the diseases that were brought over but from the force labor and conquest of the conquistadors.
The biggest one was Operation Overlord (D Day)