Final answer:
Monique participates in international trade by traveling overseas to source unique tiles from foreign producers.
Step-by-step explanation:
Monique ultimately participates in international trade through her overseas travels to source unique tiles from foreign producers.
International trade refers to the exchange of goods and services between countries. In this case, Monique is importing decorative tiles from different parts of the world to sell in her boutique.
By sourcing tiles internationally, Monique can offer her customers a diverse selection of unique and interesting products.