The major concern of scientists who left Nazi Germany for the states before ww2 was that a new Nazi would heavily persecute the Jews ,many of whom held positions in the realm of science
Better transportation affected the growth and urbanization of cities by allowing more people to travel, which in turn led to more people settling down in these cities to start a new life.
Better communication affected the growth and urbanization of cities by allowing people to understand each other better, which led to more people coming to these cities and socializing, which improved economy. People who can communicate can perform business better and communicate outside of the city, drawing more people there.
"a. A command economy with a low Human Development Index" describes a developing nation, since the government is almost always in control of production.
