Answer:
The plague had an important effect on the relationship between the lords who owned much of the land in Europe and the peasants who worked for the lords.
here are 5 methods: Issuing bonds,Sales of common stock, Issuing preferred stock,Borrowing or Using profits
Mansa Musa inherited a kingdom that was already wealthy, but his work in expanding trade made Mali the wealthiest kingdom in Africa. His riches came from mining significant salt and gold deposits in the Mali kingdom. Elephant ivory was another major source of wealth.
The name that given is Muckrakers
The term was popularly coined during the development of early progressive era in the period of 1890s - 1920s.
Back then, the government and the establishments were known to be really corrupt and many Muckrakers started to do investigative journalism to find out the truth about their practice.