French colonization of Vietnam was based on which two ideas?

OR

What is an Allegory? State any one example to clarify the same.

The French colonization of Vietnam was based on two ideas, which were economic exploitation and civilizing mission. France continued to rule Vietnam as a colony until France's defeat in the First Indochina War and the proclamation of Vietnam's independence in 1954.

OR

When an abstract idea (for instance, greed, envy, freedom, liberty) is expressed through a person or a thing. It is called allegory.

For example Broken chains which represent the idea of freedom or a blindfolded woman carrying a pair of weighing scales expressing the idea of justice.