Editing Internationalization (section)

=== Non-availability approach <small>''(Irving B. Kravis, 1956)''</small> ===
{{Main|Non-availability approach|Irving Kravis}}
The non-availability explains international trade by the fact that each country imports the goods that are not available at home.<ref name="gandolfo01">{{cite book |others= Irving B. Kravis (1956) |title= International Trade Theory and Policy: With 12 Tables |last= Gandolfo |first= Giancarlo |year= 1998 |publisher= Springer |isbn= 3-540-64316-8 |pages= 233–234 |url= https://books.google.com/books?id=IOtnekHjoJgC }}</ref> This unavailability may be due to lack of natural resources (oil, gold, etc.: this is ''absolute'' unavailability) or to the fact that the goods cannot be produced domestically, or could only be produced at prohibitive costs (for technological or other reasons): this is ''relative'' unavailability.<ref name="gandolfo">{{cite book |title= International Trade Theory and Policy: With 12 Tables |last= Gandolfo |first= Giancarlo |year= 1998 |publisher= Springer |isbn= 3-540-64316-8 |pages= 544 |url= https://books.google.com/books?id=IOtnekHjoJgC }}</ref> On the other hand, each country exports the goods that are available at home.<ref name="gandolfo" />