Country's power gaining by using colonialism. It is called imperialism. It is ideological movement. In this power gain by military force.

Hobson opposes the imperialism. He said imperialism is not necessary and it is immoral. It make unequal distribution of wealth among people. It make decline economic growth. It decreases financial growth. His arguments against imperialism can see his theory of underconsumption.

Naoroji argue against imperialism. He have drain theory to show his arguments. He says in imperialism, government could runaway along with wealth of nation due to colonialism. It destroy nation's wealth. It make poverty. He develop Indian National Congress. He say that imperialism exploit nation.

Lenin develop theory of imperialism. He says about nationalism and social transformation. He said that imperialism changed the world in economic and political manner. It rise capitalist firms. It will divide the country. It exploit poor economy by monopoly. It is not good for nation.

The Hobson, Naoroji and Lenin opposes the imperialism. They disagree with this colonial activity. They say that imperialism would destroy the world. They arguments are against imperialism. They brought different arguments against imperialism.