Lore

Dwarves are the only ones able to easily obtain their prototype firearms known as "Smith Arms"

Due to Dwarves natural ability to make items they make rolls to craft objects with advantage

 Elves 

Elves hate taking more from nature than which is needed as a result it would be very strange for a Elf to hoard resources

Due to Elves being experts of the Forests they travel better in them, along close together tree branches Elves can see easy routes that others have made making traversing them quicker.