how to query database from array adapter list and display results in another activity

I'm looking for a general idea if someone have a code or something that can lead me on the right path I'll be grateful. That's the database:

_ID   _NAME   _COUNTRY   _X
1      A         USA
2      B         USA
3      C         France

I have an ArrayAdapter that displays a countries in a listview. After clicking on the item I'd like database to display items only from this country.

So user starts app and sees:

Italy
France
USA

After he clicks on USA I want to display in the next activity only items A and B without C. Thanks.