GMAT Reading Comprehension (RC) | Re: Woodrow Wilson was referring to the liberal idea of the

In question 2, could you please explain how "property" can be the answer, from which sentences, we can conclude this.

For question 4, could you please explain the meaning of first few lines of second para as in first line of it, it has been written as " reform has left america sterile" but after few lines, it has been mentioned as " america seems not to honor the stability".so got confused between positive and negative trend, what to choose and how to choose?