With the provision of "dual criminality", a country cannot require police assistance from another country unless a suspect's activity is a crime in both countries.

The answer is True.
The provision of dual criminality usually exist unless both nations involved already set a form of extradition agreements.
In general nations with dual criminality usually does not possess solid bilateral relation with one another.

The right answer is  C.The native peoples were often enslaved by the conquering nations.

Explanation:

The arrival of European conquerors often brought  tragic and nefarious consequences for the Indians of what we call today the Americas.  Let´s take the example of Spanish conquest. The native peoples´ lands were taken; their women and children and they themselves were enslaved; their wealth was taken; their culture and religious beliefs were destroyed by the Catholic priests and Spanish administrators; millions died of new diseases brought by the Europeans. The coming of the Spanish meant the destruction of their ways of life, the end of the world as they knew it.