Which of these events is not an example of internal migration in action

Middle Passage

Explanation:

The Middle Passage was a stage in the "triangular trade." The Middle Passage was the stage in which Africans were transported to the New World as slaves. This was not an example of internal migration, as it took place in an international context and the African people were forcibly taken. The Middle Passage consisted of a journey across the Atlantic. This was done in terrible conditions, leading to many Africans dying before reaching the New World.

b)

it created free trade throughout the colonial territories.