What is imperialism primarily concerned with?

Imperialism is primarily concerned with extending a country's power and influence, especially through the acquisition of territories and the establishment of dominance over other nations or regions. This concept involves not only military conquest but also economic control and cultural influence, as imperialist nations seek to strengthen their position on a global scale.

When a country engages in imperialism, it often aims to exploit the resources of other land, spread its political ideals, and establish its cultural practices in these areas. This has been a significant driver of historical expansions and has shaped international relations over centuries.

The other options focus on aspects that may be involved in international relations but do not capture the essence of imperialism. For instance, promoting trade among citizens and fostering international collaborations can occur within a context of cooperation rather than dominance. Limiting territorial expansion stands in direct opposition to the core goal of imperialism, which is essentially about gaining more territory and influence.