That would be the spread of Islam. The height of its conquests being after Muhammad’s death.
There are abiotic and biotic factors that affect the growth of a population. Abiotic: sunlight, temperature, chemical environment Biotic: food, predators, disease, competition for resources Page 12 Carrying Capacity This is the maximum number of individuals of a species that can be supported by an ecosystem.
In the late nineteenth century, the growing middle class in cities accounted for one-third of the country's population and owned about one half of its wealth, demonstrating the powerful role of the middle class in changing America's overall economic development.
