Almost every country has its own currency in the Middle East, with the exception of Palestine which uses Israeli, Egyptian, and Jordanian money. Depending on how many countries you consider to be part of the Middle East, that is the number of currencies in use.
Yes; it is written as Middle East when you use it.
Spinach originated in the middle east. It was first recorded use was in Persia (Modern day Iran).
The Middle East is a subregion of Asia. I assume by Asian you mean East Asia. India is not a part of the Middle East or East Asia. It's in its own subregion: South Asia. It can be also referred to as the Indian subcontinent but can be offensive to Pakistanis, Bangladeshis, Nepalese, Sri Lankans, and Bhutanese people because you would be using the name of a country (India) to refer to a region that is more than just India. For this reason you should use the term South Asia instead of Indian Subcontinent.
All countries in the Middle East have fresh water (otherwise their populations would go thirsty), but as for actual lakes and rivers, Egypt, Turkey, Syria, Iraq, Israel, and Jordan have the largest and best access to water in the Middle East. Many other places make use of desalination or condensators.
Plants in the Middle East are used to the desert. They are able to store water and use it when necessary.
There aren't many houses in the middle east but I think they use clay as cement and straw for the roof.
Egypt is in the Middle East.
The tribe that settled in the Middle East were semitic.
They drink it as a beverage.
yes
If we are talking about geology, the Middle East was formed hundreds of millions of years ago.If we are talking about political borders, the modern borders of the Middle East mostly date to the 1920s.