<span>The main reason that the Arab Tribes united against the Central Powers is that Great Britain had promised the Arabs independence and it would be the first time that Arabs would have independence in much of the Middle East since the 13th century. </span>
I'm pretty sure only 1 or maybe 2 years.
Hope this helped. Have a great day! :D
Answer: Vertical integration is firm taking control of and producing its inputs and outputs rather than using the market.
Example: A vertically integrated produce company, for example, might hold a farm, a produce distribution business, and a green grocery.