Theoretically both countries should have benefited. The colony should have become more developed and the coloniser should have enriched itself from the new resources.
In practice this seldom happened. The colonising country did indeed enrich itself often to the detriment of the less developed country.
The colonization of Africa was a capitalist enterprise, not a socialist one. Socialists generally opposed the exploitation of foreign lands for the benefit of the wealthy.
When a nation conquers and settles another country for its own benefit, this practice is called imperialism. Imperialism involves the extension of a country's power and influence through colonization, annexation, or domination of other territories.
FDI can be of benefit for strengthening ties between the countries involved. It can also be disadvantageous, as there may be political crisis in one of the countries, causing loss of business.
Both Spanish and English policies toward Native American people involved colonization and forced assimilation, but there were some key differences. Spanish colonization often involved intermarriage with indigenous people and a more hierarchical societal structure, while English colonization tended to lead to more displacement and conflict with native groups over land and resources. Overall, both empires sought to control and exploit indigenous populations for their own benefit.
An easily agitated client should benefit from a de-escalation practice.
Countries benefit from interdependence because it exposes people to diversity. When countries are more diverse, the level of tolerance for different cultures increase.
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A big benefit is the trade between the two countries
Commerce.
None
Trade
trade