Some historians consider the late nineteenth century and early twentieth century to have been crucial decades in the development of Western thought. What evidence supports that contention?

Hi. You did not enter the text to which this question refers, which makes it impossible for your question to be answered. However, I will try to help you as best I can.

A textual evidence is a justification that the author uses to prove an argument presented in the text. This evidence seeks to present elements that prove that the author's argument about something must be considered correct and true. In this case, to answer your question, you should read the entire text and identify the sentences the author uses to prove that the late nineteenth and early twentieth centuries were crucial decades in the development of Western thought. In this case, the author can present the scientific discoveries made during this period that were essential to explain and solve several problems that humanity did not know how to solve.

a standing committee

explanation:

since most of current immigration into the u.s., both legal and illegal, is coming from latin america. it would be very difficult to imagine or rationalize a country my fellow citizens are trying desperately to flee into, would pose a threat to my prosperity or freedom. since the u.s. has a long history of intervention, but no record of permanent occupation, i would not feel oppression is the main objective.  

the largest free trade nation, along with the largest gdp in the world wanting to expand it's economic policy on us, and including us, could only be positive. the u.s. government has no interest in, or way of simply forcing american culture on us. and has no track record of it. other nations that adopted american social culture, or "americanization" did so voluntarily, mainly through the choice of allowing american businesses and u.s. citizens to come into their nations, as free operatives.