hi! i need your help ;)

the task:
i have a few links in menu. when i click on the link, i need to have such page:
----------------------------------------------------------
link1 - all about USA
little description (click -> open node)

link2 - all about Canada
little description (click -> open node)

link1 - all about Russia
little description (click -> open node)
----------------------------------------------------------

for each link must be opened the given one node and i need to have possibility to add new positions in this page (Great Britain etc.).
i can create page for this and add new positions manually, but i have a lot of countries and it is very difficult to do this :(
help me, please.

p.s. sorry for my bad english :(