The best way to prevent suicide is to have them call the suicide hotline.
But there are other ways, such as showing him that there is a point and possibly asking him about what's wrong and why he's upset. If something of the worse happens seek medical help.
Dutch trade, science, military, and art were among the most acclaimed in the world.
Some good websites that will help you
http://faculty.tnstate.edu/tcorse/h1220revised/formation_of_world_systems.htm
http://www.academia.edu/9958314/What_Caused_the_Decline_of_the_Mughal_Empire_During_the_Reign_of_Aur...
if you need facts or whatever message me :>