Uneducated people struggle to fit in social situations, and often remain marginalized. The lack of resources generated by education prevents them from participating in numerous social activities in a productive and comprehensive way, in contrast to educated people who engage in the same activities without difficulty
The transatlantic slave trade was harmful to Africa because it greatly depleted the continent's workforce.
I believe the answer is: it resulted in the establishment of the legislative body known as the english parliament.
Prior to magna charta, every laws in England was made by the kings, which make them untouchables even if they committ wrong doing. After the establishment of legislative body, all people in England are subjected to the same laws, even the Kings. This develop a similar national identity which is ruled by laws as the highest supremacy in England.