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How does writers use characterization in a story

At the beginning of the war, why was hitler allowed to continue his aggression without resistance from other european countries

Why is julius caesar considered an important roman leader? a. his assassination led to a civil war that ended the roman republic. b. his commitment to justice led to the creation of the twelve tablesc. his support for democracy led to expand voting rights for all romansd. his policies as dictator led to a period of peace known as the pax romana