Which of the following is the best example of how many pacific islands have adapted to a mix of different ethnic groups?

a.
they have developed national pidgin languages.

b.
they have populations where immigrants make up the majority.

c.
they practice traditional forms of art, dance, and music.

d.
they use many modern technologies, such as computers.

A.  

They have developed national pidgin languages.

Explanation:

The best example of how many pacific islands have adapted to a mix of different ethnic groups is that they have developed national pidgin languages.

This languages enable communication between this people of different ethnic groups.

A good example of this is the Melanesian Pidgin which is developed and spoken by Malaysians of different ethnic groups.

the factors that the economies of the muslim empires prosper were:

1- land trade routes-located between three continents  

2- sea trade routes

trade contributed to the spread of muslim empires, and with that islamic culture led to a growing feeling of internationalism resulted in the transfer of technology, science, and other cultural forms.