The Destruction of the European Jews was created in 1961.
The title of Raul Hilberg's 1961 book 'The Destruction of European Jews' says it very well.
Jews.
The population of European Jews in 1935 was about 9.4 million.
In most European countries there was so much destruction as a result of World War 2 that it's not possible to separate this out from other factors that damaged many European economies.
The Holocaust
No, Jews stopped going on pilgrimage with the destruction of the Second Temple.
There was no 'European response'.
Egypt
Between 78%-79% of all European Jews were massacred during the Holocaust.
The Holocaust or genocide
Widespread destruction. Hitler killed millions of Jews.
1) The First Destruction (some 2500 years ago), when the Jews were scattered to Babylonia and elsewhere. 2) After the Second Destruction (about 1950 years ago), many of the Jews of Judea but not all) went into exile (diaspora).