In simple, Imperialism is the policy of extending a nation's authority over other nations..... So cultural imperialism is the policy to exalt and spread the values and habits of a nation's culture at the expense of a native culture from other nations..... For me, cultural imperialism is euphemism for culture domination.

Politically, imperialism is the aggressive extension of authority of one country over another. Of course this can be played out in lesser stages, in lesser forums--from the small and personal to the national level. Cultural Imperialism is when culture is wielded like a weapon. It could be an interloping culture trying to force its way in to an established one; but it could by definition also mean the established culture --say for example, in art,--with traditionalists holding sway and overpowering any new movements. The chief element here is "imperialism" which implies a force beyond the culture itself, as if this cultural force will consume others in its wake, the way an enzyme increases the rate of a chemical reaction. The real question is whether such imperialism is simply the result of a natural expansion, or if it is consciously perpetuated. (The latter makes it somewhat sinister--like in the 1800s, the way Native American children were removed from their families and forcibly enculturated into an American lifestyle.)

MBA kay syllabus may mila kia? :P