Human migration is the movement of people from one place to another with the intention of settling in the new location. When large numbers of people relocate, historians ask questions about why these people moved and what impacts their movements had.
Both of them are the most important cities in their countries. They are capitals and cultural, demographic and industrial centres.
Are you referring to a picture? if not, stars range in size from neutron stars, which vary anywhere from 20 to 40 km in diameter
Oh yes, that is so true :)