These are Portugal and Spain.
Fun fact: did you know that the border separating those two countries is the oldest on earth (excluding natural borders)? It's been almost the same for around 1000 years (but recently they swapped a little land...)
Migration changes the population of a place, therefore, the distribution of the population is uneven in the country. Migration increased the slum areas in cities which increase many problems such as unhygienic conditions, crime, pollution etc. so, unmanaged migration can be a Great threat in population management.
<span>Answer: Deals with the study of mental processes such as attention, creativity, language use, perception, and problem solving.
Hope this helps!</span>
Crew of Dutch explorer Abel Tasman
