Final answer:
The title of a map indicates the part of the world it represents, providing immediate recognition to users. Scale bars on the map, compass roses, and grids are additional components that complement the title by offering orientation, scale, and coordinates.
Step-by-step explanation:
The part of a map that indicates the part of the world it represents is the title. Map titles give users a quick understanding of what the depicted area is. Unlike the compass rose, which provides orientation with an arrow pointing north, and the grid, which shows the overlay of latitude and longitude lines, the title is intended for identification purposes. For a more detailed understanding of the area displayed and comparative distances within the map, scales are provided, which may be represented both in kilometers and miles, and often include a visual scale bar that aids in measuring relative distances on the map. Various maps, such as the historical 1855 Colton's Map of the World on Mercator's Projection, not only clearly have a title but also may contribute aesthetic and functional elements like noting explorers' routes or highlighting features like Mercator projection, a commonly used methodology since its introduction by Gerardus Mercator in 1569 despite its distortion of landmasses.