The answer would be the formal operations stage. This stage starts at roughly age 12 and endures into adulthood. Amid this time, individuals build up the capacity to consider theoretical ideas. Abilities, for example, legitimate idea, deductive thinking, and precise arranging likewise develop amid this stage.
Answer:.Brazelton Neonatal Behavioral Assessment Scale.
Explanation:
The Neonatal Behavioral Assessment Scale (NBAS) was initiated by Dr. T. Berry Brazelton and his colleagues.Currently it is the most used method to evaluate the behavior of the newborns.
It determine how newborn respond to their new environment outside their mother's womb and how they are developing a relationship with their parents.
On way in which colonization and slave trade can be blamed for the current situation is that the colonial powers have divided the land arbitrarily, and this means that today many African countries are facing many problems of ethnic conflicts.
Also, slavery and colonization meant that for many years the colonies were drained of resources, but not invested into: so they don't have as good infrastructure as they maybe would have without having been colonies.