1) Was the tsunami an act of God perpetrated for the purpose of activating missionary activity in Muslim communities of Indonesia?
Taking advantage of the situation of disaster victims in order to gain more followers is quite immoral I'd say. There are lawyers who do something similar by profiting from the victims of accidents. They are often called 'ambulance chasers'
But God in this case would be even worse as he actually caused the disaster to begin with. Even the average ambulance chaser would (hopefully!) draw the line at actually causing someone to have an accident, in order to gain from it.
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