Yes, it is true that generally speaking most Arab countries recognized the new country of Israel when it was established in 1948 and it was supported by the United Nations, although this was not the case for all Arab countries.
Law number 8 governed the people in his fast growing empire
I would go with 'Major sandstorms destroyed the crops' because the Indus Valley civilization most likely declined by something affecting the food.
To make it easier to govern at a smaller level. It also makes sure one person doesn’t have too much power and gives accurate results with what the people want.