Which of the following contributed to the industrialization of the u.s. in the late 1800s?

The demands of the Civil War, the availability of natural resources, an increase in immigration, and entrepreneurs working with minimal government regulation all contributed to industry growth.

One of the unusual features of a map of African languages is the existence of a language in Madagascar belonging to the Indonesian subfamily.
Madagascar is an island that belongs to Africa, yet there is an Indonesian language spoken there, which is not accounted for. It is rather odd that this should happen, which is why African languages in this part of the world are unusual.