was he involved in case of assasination?
Rumors began to swirl that Cardinal Giulio—lacking legitimate successors to rule Florence—planned to abdicate rule of the city and "leave the government freely in the people."
Pope Clement VII
In 1522, rumors began to swirl that Cardinal Giulio—lacking legitimate successors to rule Florence—planned to abdicate rule of the city and "leave the government freely in the people." When it became clear that these rumors were untrue, a faction of mostly elite Florentines hatched a plot to assassinate him and then install their own government under Medici's "great adversary", Cardinal Francesco Soderini. 
the english ruler that attempted to restore catholicism was UNANSWERABLE what do this reformation refers to? The English Reformation took place in 16th-century England when the Church of England broke away from the authority of the Pope and the Roman Catholic Church. what action was taken against the clergy? Having brought down his chancellor, Cardinal Wolsey, Henry VIII finally resolved to charge the whole English clergy with praemunire to secure their agreement to his annulment. under whose leadership did this reform start? It began with Henry VIII's desire for an annulment of his marriage (first requested of Pope Clement VII in 1527). when did this latter person achieved in his life? Cardinal de' Medici’s other endeavors on behalf of Pope Leo X were similarly successful, such that "he had the credit of being the prime mover of papal policy throughout the whole of Leo’s pontificate."
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Pope Clement VII [SEP] Assassination Plot of 1522
In 1522, rumors began to swirl that Cardinal Giulio—lacking legitimate successors to rule Florence—planned to abdicate rule of the city and "leave the government freely in the people." When it became clear that these rumors were untrue, a faction of mostly elite Florentines hatched a plot to assassinate him and then install their own government under Medici's "great adversary", Cardinal Francesco Soderini. Soderini encouraged the plot, exhorting both Adrian and Francis I of France to strike against Medici and invade the latter's allies in Sicily. This did not happen. Instead of breaking with Medici, Adrian had Cardinal Soderini imprisoned. Afterward, the principal conspirators were "declared rebels", and some were "apprehended and beheaded; by which means the Cardinal was again secured [as leader of Florence]."