Extreme racism and propaganda
ethnic tolerance is the opposite of what was done to the Jews, Blacks, and Gypsys.
The Nazis had in total power for 6-7 years when the Final Solution was ordered
It was a ethnic issue not a government issue, the Jews had no power in Germany
Modern people are Homo sapiens.
The president : Donald Trump
"The Constitution provides that the president "shall have Power, by and with the Advice and Consent of the Senate, to make Treaties, provided two-thirds of the Senators present concur" (Article II, section 2)."
https://www.senate.gov/artandhistory/history/common/briefing/Treaties.htm
Hope this helps
The answer is D) Constitutional Monarchies.