It depends if it's a single or a double bar line.
if it's a double bar line it's just there to separate the sections of the music and if it's a single bar line all it does it separate the beats in order to make a measure.
If you’re talking about any story, then it would usually be the protagonist (the hero, the main character, and/or the humanitarian). On rare occasions the story will take place with a character that’s the antagonist (the bad guy, and usually has a lot of trauma that caused them to be the bad guy.) when the antagonist is the main character in a story it’s usually to show us the backstory of this person and what led up to them being bad.
It sought to emphasize simplicity and symmetry <span />
The 1st mosaics were made in Greece, in the 4 and 3 centuries BC. they were made of black and white pebbles, colored ones were rare.