The rise of fascism and Nazism in Europe marked a dark chapter in 20th-century history. Born from the ashes of World War I and fueled by economic turmoil, these ideologies exploited nationalism and fear to gain power. They promised strength and renewal but delivered oppression and violence. Fascist regimes in Italy and Germany reshaped society, crushing dissent and pursuing aggressive expansion. Their actions led to World War II and the Holocaust, leaving a legacy that continues to influence global politics and our understanding of authoritarianism today.