What is imperialism and why do we have it?

Imperialism is a policy or ideology of extending the rule over peoples and other countries, for extending political and economic access, power and control, through employing hard power especially military force, but also soft power.

Explanation:

Imperialism is simply a manifestation of the balance of power and is the process by which nations try to achieve a favorable change in the status quo. The purpose of imperialism is to decrease the strategic and political vulnerability of a nation.

Imperialism is the state policy, practice, or advocacy of extending power and dominion, especially by direct territorial acquisition or by gaining political and economic control of other territories and peoples.

The definition of imperialism is the practice of a larger country or government growing stronger by taking over poorer or weaker countries that have important resources. An example of imperialism was England's practices of colonizing India. ... Imperial state, authority, or system of government.

after the roman empire, the catholic church began to unify by taking on many duties of a government.