Answer:
According to bbc, Article 231, the War Guilt Clause blamed Germany and her allies for starting the war – this led to feelings of humiliation and anger. Germany had to pay reparations of £6.6 billion - this ensured that the economy would not recover.
Explanation:
Poor air and water quality, insufficient water availability, waste-disposal problems, and high energy consumption are exacerbated by the increasing population density and demands of urban environments and obvious urban growth and sprawl.
Some of the major health problems resulting from urbanization include poor nutrition, pollution-related health conditions and communicable diseases, poor sanitation and housing conditions, and related health conditions. These have direct impacts on individual quality of life, while straining public health systems and resources. Urbanization has a major negative impact on the nutritional health of poor populations. Because they have limited financial resources and the cost of food is higher in cities, the urban poor lack nutritious diets and this leads to illness, which contributes to loss of appetite and poor absorption of nutrients among those affected.
These are just a few of the many downsides to urbanization. While not everything about urbanization is negative of course the depth of discussions to be had about the various aspects are almost infinite. Your question was a tad vague and didn't give specifics as to what you were looking for so I hope my answer helped.
Primary source is the firsthand experience and evidence of an event, where the any given information first appeared (initial report). The secondary source uses the first source in order to give its information (for example: document that analyzes primary source documents).
When analyzing historical event a researcher use a secondary source instead of a primary source because he uses the primary source as the imput information (facts, events, dates, names) in order to analyze them, connect them and explain them in his work.
