Here are some of the economic factors that contributed to the end of the Indian Ocean slave trade discussed in the sources:

* **Shift in economic interests**: As plantation economies declined and wage labor rose, the demand for enslaved labor decreased.

* **Industrialization**: The Industrial Revolution shifted economic activities toward mechanized production, reducing reliance on slave labor.

* **The exploitation of Indigenous Australians**: European settlers in Australia used various forms of forced labor, including agricultural labor, domestic servitude, and exploitation in the pearling and fishing industries. This reduced the need to procure enslaved labor from the Indian Ocean region.

* **Blackbirding:** The practice of blackbirding, which involved the coercion or kidnapping of Pacific Islanders to work as laborers in industries such as sugarcane, pearling, and pastoralism, provided an alternative source of cheap labor for industries that may have previously relied on enslaved labor from the Indian Ocean region.

**It is important to note that the sources focus heavily on Australia. Therefore, the economic factors relating to Australia may not represent the broader economic landscape of the Indian Ocean region as a whole.**