Slavery has always been a controversial topic around the world and it was and horrible, but an important time back then, when it first started. slavery in america began when the first group of african slaves were brought to the north american colony of jamestown, virginia, in sixteen nineteen, to with the production of important crops like tobacco. slavery spread throughout the american colonies and since it's hard state accurate facts, some historians have estimated that six to seven million slaves were imported to the new world during the eighteenth century alone, making the african continent lose of some of its healthiest men and women.

the industrial development of cities in the ruhr area in the nineteenth century is described. the research was based on english and german language sources. several factors that shaped growth and paths of the cities were categorized and analyzed. they are locations, resources, traditions, entrepreneurs, and technological developments. locations and resources were the most important among them; other factors may be regarded as consequences from locations and resources. among the cities, bochum, essen, gelsenkirchen, and dortmund had the richest resources and most favorable locations in the transportation network and grew to be the largest cities in the ruhr area near the end of the nineteenth century. riverside location was also a favorable factor for the development, as shown in the development of duisburg on the confluence of rhine and ruhr. resource distribution can explain the rise of textile industry, metallurgical industry, and coal and iron industries, and the northward progression of the mining industry. tradition was an important factor for cities such as krefeld, barmen, elberfeld, solingen, and remscheid, which experienced development based on their traditions through the nineteenth century. various entrepreneurs exerted influences within and beyond the local level over the ruhr area. technological development stimulated the northward progression of the mining industry and the deep connection between the coal and the iron industries.

the structure was most likely used for;

c. playing a ball game with stone hoops