The stained glass window shown in the picture is a rose window.
Explanation:
The stained glass window shown in the picture is a rose window. The term rose window can be used to describe any circular window but it is most commonly used to define the typical circular windows of the <u>Gothic architecture</u>. Those Gothic rose windows were mainly used in churches, specially in French cathedrals. They are always divided into segments by stone mullions.
White passengers sit in the front of the trolley while African-Americans sit in the back, per law that was in place in many Southern states during the time.