Final answer:
Antisemitism in Europe increased significantly after the rise of the Nazi Party in Germany, which utilized this sentiment as part of their political strategy to gain power, influenced by anti-Semitic theories and rhetoric prevalent since the 1800s.
Step-by-step explanation:
Spread of Antisemitism and Rise of the Nazi Party
Antisemitism spread throughout Europe after the rise of the Nazi Party. The Nazi Party, led by Adolf Hitler, capitalized on the economic turmoil and societal fears of the 1920s and 30s, contributing to growing public frustration with Germany’s existing democratic government. Through clever propaganda and public speaking, Hitler targeted various groups for Germany's economic woes, particularly Jews, and was able to win the majority of seats in the German Reichstag by 1932.
The Nazi Party, which stood for the National Socialist German Workers' Party, harnessed anti-Semitic sentiment as part of their political strategy. This tactic had roots in the 1800s, with the inception of the term 'anti-Semitism' by German politicians. By subscribing to racist theories of the time and blaming Jews for a host of political, social, and economic problems, they gained substantial power.
The spread of antisemitism was not an isolated phenomenon, as other European countries and the United States also witnessed varying degrees of anti-Semitic political activity.