¿Qué recursos utiliza el historiador para investigar hechos y por qué son importantes?

How did regional differences in italy initially prevent unity in the new nation?

Which areas where seperated by the iron curtain

How could a works-cited list a reader determine whether to believe the claims you make in an essay? a. by synthesizing your conclusions into a simple objective summary o b. by proving that your claims are supported with credible evidence ) c. by allowing you to make claims without quoting other writers o d. by providing a clear organizational structure to your essay