Answer:
Tuskegee.
Explanation:
As the exercise describes, one of the most shameful violations of research ethics to date, nearly 400 African American men from Tuskegee (later called the Tuskegee syphilis experiment) were not informed that they had been diagnosed with syphilis and were not provided with available, effective treatments for this illness. The aim of this study was to observe and analyze how syphilis proceded when untreated. So, this men were told they were being treated for free.
Trade increase, whilst Europeans also brought back knowledge about plants, irrigation and the breeding of animals. Western Europeans brought back many gods, such as lemons, apricots, sugar, silk and cotton and spices used in cooking.
His warnings were the political parties would divide people. They were not heeded because many people had different ideas, values and disagreements. Many different political parties have been registered over the years but the only two which evolved and survived are the two we have today.