Source message would be the answer you would be looking for
Answer:
The Americans
Explanation / Resources:
"The United States received the disputed Texan territory, as well as New Mexico territory and California. The Mexican government was paid $15 million — the same sum issued to France for the Louisiana Territory. The United States Army won a grand victory." (www.ushistory.org)
"The Mexican-American War was a conflict between the United States and Mexico, fought from April 1846 to February 1848. Won by the Americans" (www.britannica.com)
communicate effectively with the intended audience
2. The whole Nazi environment probably aided to these Sonderkommandos becoming collaborators, from seeing everyone around you either fleed, killed or tortured is enough to make people to make choices like that. It was a live or die situation and under those circumstances, anything could happen.
3. Levi and Langer want us to see this situation from the Sonderkommandos point of view, where virtue and morality don't apply and the only choice is to kill/ follow the Nazi orders or be killed. They probably thought that by taking on this task there was a chance of survival.
4. The choices that we make help us to develope as person and in our personal identity, and in the absence of meaningful choices it can confuse us in our identities, and can lead us to make critical descisions.