The term aclamar is used to refer to the expression of approval it is made to one or more persons and which usually is done by means of applause, shouts, cheers, etc. It is the manifestation of joy that a large group of people express, as a result of the appreciation they feel towards a person or heroic action carried out by someone, who does not necessarily have to be famous.
This acclaiming is something as old as the human being himself, since for example in the time of ancient Rome it was customary for emperors, princes and captains, during their presentations to be acclaimed by the crowd, who showed their congratulations and his emotion for having carried out with courage, some significant event.
Nowadays it is common to cheer and applaud, since it is a practice that is very present among people, especially when something is being celebrated or participating in something considered festive. For example, it is normal for birthday parties, graduations, etc. The birthday boy or recent graduate is cheered with clapping, shouting, whistling, etc. When he makes an appearance or when he blows out the candles on the cake.
In sports settings, the term cheer is also used, especially when the team of your choice makes a score, or wins the match; in this case the fans go crazy with joy and begin to shout and cheer for their team.
In politics, it is also common for the leaders of their choice to be acclaimed, especially if they are people who have done excellent work for their people.