Answer:
Construction jobs, textile production, and manufacturing are examples of the second economic sector.
Explanation:
The economic activities are divided into four major groups in accordance with their characteristics and at which level of economic development they are dominant. The four economic sectors are the primary, secondary, tertiary, and quaternary sectors. The secondary is an economic sector typical for developing countries that are in the process of industrialization.
Because these countries are rapidly industrializing and transitioning from agricultural societies, their labor force is not very skilled, so they are suitable for jobs that are of a lower level, or rather where particular skills are not required. This makes a situation where the construction, textile, and manufacturing industries prosper the most, with the labor force being abundant for them. This is a typical secondary economic sector.
The connection between the plate boundaries and the volcanoes lies in that that they are both part of the geological activity on the planet, and that they are both found on roughly the same places.
On the places where there's plate boundaries, apart from the continental-continental convergent plate boundaries, there's a lot of geological activity. There's cracks that form through the crust, extremely high pressures, adjustments of rocks inside the crust, opining gaps between two plates. That leads to suitable conditions for the high pressure of the mantle layer to be able to push upwards the magma through this places. The magma is very hot, and supported by the high pressure from bellow, it manages to reach the surface relatively easily. Once the magma reaches the surface, it starts to lift up the surrounding area, forming a cone shaped feature, and once the crust is not able to stretch anymore, the magma breaks through it and in the form of lava comes on the surface, forming new crust. If we take a map where the volcanoes and the plate boundaries are marked, we can easily see that their locations correspond, expect for the volcanoes on Hawaii which are formed because of a hot spot.
Well, I am a Muslim, (a person in the religion of Islam), so I could answer this very easily.
Why it's so important to North African countries is because North African Countries are closer to the middle east; the "base" or "home" of Islam.
Why you may ask is it our base/home?
Well that's the area of land our religion was founded in, by our Prophet Muhammad (May peace and blessings be upon him).
So, since North African Countries are very close to the middle east, (they actually used to be part of the middle east; in fact, all countries were actually one full piece of land called "Pangaea" until Earth's tectonic plates divided it into multiple pieces of land), they felt as if they would interpret many of the middle east's customs, religion, tradition, culture, and basically their lifestyle.
This is why it's important :)
I hope I helped you! ^-^
At the convergent and divergent plate boundaries