A. Main Idea: The Church was a powerful political force in medieval Europe, often to the detriment of its role as a spiritual guide. 1. What reforms did Pope Gregory VII try to make to the Church? 2. How did Pope Innocent III increase his power over the political arena?

12. An experiment is a specific test of a A. \( { }^{r} \) theory B. variable C. \( r \) control D. \( r \) hypothesis

20. In a controlled experiment, the single factor manipulated by the researcher is the variable and the responding factor that is measured is the variable A. independent, dependent B. dependent, independent C. controlled, uncontrolled D. controlled, common

1. Esponi le informazioni sui Longobardi rispondendo alle seguenti domande. Da dove proveniva il nuovo popolo che invase l'Italia?

1. Esponi le informazioni sui Longobardi rispondendo alle seguenti domande. Da dove proveniva il nuovo popolo che invase l'Italia? - Quali territori occupò? - Quale divenne la sua capitale?

On considère dans l'ensemble C l'équation (E) suivant: (E) \( z^{3}-(2+3 i) z^{2}+2(5+3 i) z-20=0 \) 1) montrer que l'équation (E) admet deux solutions imaginaires pures à détermine 2) Déterminer le nombre complexe u pourque l'équation (E) s'écrive sous la form \( (z+2 i)(z-5 i)(z+u)=0 \)