The era is marked by profound technical advancements such as the printing press, linear perspective in drawing, patent law, double shell domes and bastion fortresses.
Several common causes precipitate brain drain on the geographic level including political instability, poor quality of life, limited access to health care, and a shortage of economic opportunity. These factors prompt skilled and talented workers to leave source countries for places that offer better opportunities.
The causes of brain drain include push factors, which are negative characteristics of the home country that forms the impetus for intelligent people migrating from Lesser Developed Countries, such as political instability, and pull factors, which are the positive characteristics of the developed country
Pull factors are identified as higher standards of living and working, family reunions and better prospects for children
