why were the effects of the work of jesuit missionaries so long lasting?

Answer 1

The Jesuits say, "Give me a child until he is six and he is mine for the rest of his life". They not only converted adults to Catholicism, but set up schools and educated the children and through the years and centuries have been intellectuals who interacted and influenced the populations they served.

They could also be very severe and inspired fear, which is one way to earn respect and have a lasting effect.

The Knights Templar were called warrior monks and I have always thought of the Jesuits as warrior priests, (Although they didn't bear arms, as the Templars did, they accompanied many Spanish expeditions during the times of the conquests.) devoted and single minded and willing to kill, rather than to lose.

It has nothing to do with their lasting effect, but I have always found the Templars and Jesuits incredibly seductive and beguiling, based upon the literature anyway. In real life I am sure they were just men, like all the others.

Answer 2

They were missionaries bringing the message of Christ to all nations. There are still churches in Goa, India today because of the Jesuits (as well as other parts of South East Asia).

Answer 3

The Jesuit Missions, particularly in South America and China, were conducted under a different approach than other missionaries had, in terms of communal life and property ownership, distribution of wealth, providing health care, care for orphans and widows, literacy and teaching of skills, respect of native traditions, and other social experiments.
In South America, these missions were considered such a threat to the established order (which included the enslavement of the antive population) by the local European authorities that they had them expelled.