history of CBD
The CBD developed as the market square in ancient cities. On market days, farmers, merchants and consumers would gather in the center of the city to exchange, buy, and sell goods. This ancient market is the forerunner to the CBD. As cities grew and developed, CBDs became fixed location where retail and commerce took place.The CBD is typically at or near the oldest part of the city and is often near a major transportation route that provided the site for the city's location, such as a river, railroad, or highway.Over time, the CBD developed into a center of finance and control or government as well as office space. In the early 1900s, European and American cities had CBDs that featured primarily retail and commercial cores.
A central business district (CBD) is the commercial and business centre of a city. In larger cities, it is often synonymous with the city's "financial district". Geographically, it often coincides with the "city centre" or "downtown", but the two concepts are separate: many cities have a central business district located away from its commercial or cultural city centre or downtown. Both the CBD and the city centre or downtown may also coincide with the central activities district.A city's CBD is usually typified by a concentration of retail and office buildings.The CBD usually has an urban density higher than the surrounding districts of the city, and is often the location of the tallest buildings in the city.