France's colonization of vietnam was considered

a fair way to colonize another nation of people.
a mixed bag - thousands of people converted to catholicism but no trade route was found.
a failure of conversion to catholicism, and no successful trade route into china.
an example of colonial success.

"the sepoy rebellion was the result of many, many influences and stressors on the cultures of india living under british rule. in britain, it's called the sepoy mutiny on the indian mutiny, but in india, it's called the first war of independence.

the main reason is concerned to the british paramountcy , the belief in british   dominance in india political, economic and cultural life had been introduced in india about 1820."

"they were forced to grow crops that benefited the colonizing nations instead of feeding their own people."