The term 'attempted to overthrow' can be summarized by the crossword solution 'UPROSE, ' which means to rise in revolt or rebellion. This term is often used to describe a situation in which a group of people attempt to overthrow an existing government or authority. It is usually done through violent means, such as armed insurrection or civil disobedience. In some cases, uprisings are successful and result in a new government or regime. In other cases, they fail and the existing government remains in power.