This number would greatly increase, as there are many nations that don't have their own their own country. Some are part of a bigger country (the Tamils in India) and some are distributed among many countries (the Kurds)
Recognizing all those nations could increase some conflicts, such as that between the Kurds and Turkish in Turkey.
I think that a good definition should acknowledge that some nations have independent states and some are part of another state - the defining characteristics should be a sense of unity among the nation.
It takes 24hrs for it to hatch
The correct answer to this open question is the following.
Although there are no options attached we can say the following.
By what process did the Muslim Empire receive and exchange their ideas, achievements, and knowledge?
We can say that the Muslim Empire received and exchanged those things through trade and conquest. But basically through trade.
Islam spread in the 13th century.
In the beginning, Islam was introduced through Arab Muslim traders and merchants. After they did so, it was the rulers through the conversion of the elite people. Missionaries came from Southern Asia, like Champa and Gujarat. There also were missionaries from the Hadhramaunt, in Arabian Peninsula.
In those years, during the Fatimid Caliphate, Muslims from Arabi expanded their territories and captured some parts of North Africa, including Egypt. Trade was a very important activity and helped spread Islam throughout many regions of Africa. Muslim traders took their Islam beliefs everywhere and influenced many people.
We use more freshwater to provide us with Electricity.
Freshwater is one of the most used natural source for us to generate electricity.
We do this by placing a magnetic turbin in a place where the freshwater have strong current (such as under the waterfall). The force from the current would cause the rotation of the turbin and produce electricity
