What was the most important factor in making mesopotamia's farmland fertile?

The Mesopotamians were the first to use irrigation and ox-pulled plows allowing them to make more food. They invented irrigation, which kept their plants from drying out and made them fertile. Not to mention, they lived by the river and could use fertile river mud to keep their plants healthy, and put nitrogen into the soil (because nitrogen is plant food). Hope this helps ya, bro!

Need recognition (awareness): The first and most important stage of the buying process, because every sale begins when a customer becomes aware that they have a need for a product or service. ... Evaluation of alternatives (consideration): This is the stage when a customer is comparing options to make the best choice.

Explanation: