It is always good for places to diversify their economy and bring growth by almost any means necessary. When you increase tourism and give free helth care, these are both great for economies and drive the GDP through the roof. So yes, Silesia absolutely should diversify its economy immediately and see growth.
Yes, Silesia should diversity its economy to include tourism and health care, in addition to mining, manufacturing and agriculture, because there is a lot of money to be made in those industries. It is also helpful to an economy to be diverse, because then when one industry goes south, the others can help the country survive.
Silesia should diversify its economy to include tourism and health care in addition to mining, manufacturing, and agriculture. It cannot survive on a few industries alone these days. Going into tourism and health care would be very smart. It wouldn't take too much investment dollars as the other facets are already established.
Silesia is mostly located within Poland but it is also fragmented in neighboring countries as well. I do believe Silesia should diversify its economy to include tourism and health care in addition to mining, manufacturing, and agriculture. I believe a diversified economy is far more healthy and strong than those that are not.
It's a bit of a strange thing to portray Silesia as a single entity, considering that the region spans three different nations. But I really do not see a need for the area to expand its reach into tourism and health care. The extraction of natural resources as their top industry suits them just fine.