Transition , from Latin transit, is the action and effect of passing from a state to a different one. The concept implies a change in a way of being or being . It is generally understood as a process with a certain length of time.

The transition is a kind of non-permanent stage between two states. For example, we talk about political transition to refer to the successive stages that are lived in a country during the change of a system for another.
Reference can be made to the transition to democracy when a military regime comes to an end and democratic life begins to develop. In this type of transitions, it is common that elements of both regimes coexist in the first moments (there may be free elections although the judges appointed by the dictatorship, among other similar situations) are maintained.
In this sense we could establish that one of the most important historical stages of Spain is precisely the so-called Transition. During that period, the passage of what was a dictatorial regime was carried out, leading General Francisco Franco, to a democracy as such.
The death of that one, on November 20, 1975, is what is established as the starting point of this transition. It established a king, Juan Carlos I de Borbón; a President of the Government (Adolfo Suárez) was opted for, a Law for Political Reform was passed and democratic elections were held on June 15, 1977.
In addition to all this, it should be stressed that one of the fundamental pillars of this historical period was the drafting and subsequent approval, by referendum, of the 1978 Constitution. A magna Carta that, among other things, opted for a social and democratic State of Right.
Without forgetting that another of the most notable moments of this transition was when on February 23, 1981 the Congress of Deputies was the scene of a coup d'état with the Civil Guard Antonio Tejero in front. The Spaniards returned to fear that a dictatorial regime will return but the splendid performance of the monarch and certain leaders of the country prevented that action from moving forward.
On an economic level, there are also different transitions. The transition from feudalism to capitalism It is the phase of historical development that implies the disappearance of the fiefdoms and the establishment of the capitalist regime. The transition to capitalism also took place when former communist countries adopted capitalism after the fall of the Union of Soviet Socialist Republics (U.R.S.S.) .
In the case of the adoption of communism , the transition is usually more drastic. That's why we usually talk about revolution (as in the case of Cuba ) and is associated with an almost immediate establishment of the new regime.
In the treatment of images, finally, the transition is a special effect which is used to make a slide appear and replace the one shown at a certain time or on a black background.
There are many transitions of this type that exist and should be used in the most convenient way to get an audiovisual montage to achieve the desired impact and continuity.