I'm not sure if this is the right answer, but if you're referring to moving from country to country it is called "Immigration".
Did you mean Migration.If you did it means when animals travel from one place to another following the seasonal patterns.
Migration is the seasonal movement of animals from one region to another, often for breeding, feeding, or survival. This round-trip journey is essential for species like birds, fish, and mammals to find suitable habitats and resources throughout the year. Migration routes can span thousands of miles and may involve multiple generations of animals.
The movement of people from one place to another.Migration is a cyclic behavior that involves the regular, seasonal or annual journey of an animal from one place to another and back again. Animals usually migrate to an area that provides a lot of food or a good environment for reproduction. Answer Migration is regular movement over relatively long distances. Migratory animals generally make one round trip between two regions each year, although there is considerable variation among species. There are three subcategories of migration, or three types: piloting, orientation, and navigation. The official definition of the word migration is "seasonal movement of animals from one region to another." The official definition of the word migration is "seasonal movement of animals from one region to another."
a long journey by water to a distant place. Or can be a journey by land from one place to another
Some animals journey each year to the same place to breed. This is what is known as migration and the wildebeest migration is a good example.
A round trip is a journey from one place to another and back again. It differs from a one-way journey because a one-way journey is only from one place to another without returning to the starting point.
no
All do so.
A passage from one place to another is typically called a journey or a trip. It refers to the process of moving or traveling from one location to another.
A voyage or trip from one place to another, such as--> "Let us journey to Toronto for a visit." Also a distance that you will travel, such as--> "The journey will take 2 days to cover."
highway
Migratory animals travel from one place to another. This usually involves long distances and seasons.BirdsSharksWhales