They were treated poorly because of the same reason the Nazi's treated adult jews; it was because of their heritage. After they were sent into camps, it did not matter how old they were, no one was spared of his wrath.
If you want to know exactly what happened to them with great visuals, I suggest plugging "Children of The Holocaust" into YouTube and finding a great visual explanation to go along with your research.
The political movement that emphasized conservation at the turn of the century was the progressive movement. The movement refer to an ide where the Government would focus more attention at the development of science and technology
They die one again just stop my dude
There are basically two systems, there is Capitalism and Socialism and most countries tend to use a combination of the two, known as a mixed economy.