The first point is right: George Mandel-Mantello was a Hungarian Jew. His last named was modified to a Spanish-sounding one.
The second point is right: Many of the distributors were Jewish people themselves.
The third point is wrong: Mandel was never imprisoned in a concentration camp.
The fourth point is right: Mandel was working at the El Salvador consulate in Switzerland, so he got permission to give certificates of citizenship to Jews to prevent them from being killed or imprisoned.
The fifth point is wrong: There were cases where the Nazis did not honor the certificates. Some also arrived late, for example, Mandel's parents themselves did not get the certificates in time.
The North of the United States because he thought that slavery should not exist. North believed that but the south already had slaves and thought he was wrong. The south wanted Slavery to continue.
US president Thomas Jefferson recognized that the revolution had the potential to cause an upheaval against slavery in the US not only by slaves, but by white abolitionists as well. Southern slaveholders feared the revolt might spread from the island of Hispaniola to their own plantations.