Breadcrumbs and url

How to generate urls based on navigation of breadcrumbs , Iam using
rails3.0.9 ruby 1.8.7 for breadcrumbs acts_as_tree plugin and
nifty_generators gem
breadcrumbs are created for zone nested table that has country, zone,

i got a breadcrumb supply_type >> country >> region >> city where
type is another model, got to generate the url as
for ex:

if we want all the supply type in all country for example in all uk