* Formal: The global pandemic highlighted the economic interdependence of nations, as supply chains were disrupted and economies around the world suffered.
* Informal: The rise of e-commerce has increased economic interdependence between countries, as businesses rely on global networks for sourcing and distribution.
* Specific Example: The economic interdependence between the United States and China is evident in the vast trade flows of goods and services between the two nations.
The specific sentence will depend on the context you're writing in. But hopefully, these examples give you a good starting point!