Answer:
They are made of gorges and canyons.
Explanation:
The Hijrah is a significant event in the history of Islam in that it signified an important journey that Muhammad and his followers took in 622 CE. Fearing assassination Muhammad and his followers fled Medina and travelled north to the city of Yathrib. Here they established themselves and the city later became known as Medina Al-Nabi or "the City of the Prophet" and was eventually shortened to its current name just Medina. In Medina Muhammad and his followers suffered hardship to reestablish themselves and survive signifying an important step in the survival of the Islamic faith.
The correct answer to this open question is the following.
You did not include the name of the host nation. So we are going to take into consideration the example you set: Africa.
Some places you can visit in the African continent in order to find out about the people's past as well as how they live today is the cosmopolitan Cairo, Egypt, in the North of Africa.
In Cairo, you can place one of the 1o Wonders of Ancient Times: the Pyramids of Giza. It is a magical place where you can find the Great Pyramid and the Sphinx. It is one of the most important places where you can learn about ancient civilizations. In downtown Cairo, you can visit the Museum of Cairo, where archeologists have collected an impressive number of artifacts, rocks, figures, and books, that can give you a good idea of the grandiose of the ancient Egyptian civilization.
And if you want to learn more about modern-day human activities, Cairo is the place to be. The perfect combination of an overcrowded city with all the modernities and problems of a great cosmopolitan urban area.
The answer is B) closed because it flows through things. For example: Light switches on the inside. I hope this helps.
They both keep each branch in its place and make sure their job is being done.