The correct answer is - Watershed.
The drainage basis are places in which all the water in an area is accumulated and ends up in the same place. The drainage systems are divided by highlands, which can vary from small hills to very high mountains, depending on the topography of the place.
The line on the highland that is separating the drainage systems is called watershed. The watershed is simply a line stretching on the highest parts of a highland, thus having a slope on each side.
I think you know the answer, but it is 4.
Your question seems to be a bit muddled. "Horse latitudes" are associated with the "Subtropical High Pressure" system.
You wrote the first two words of your answer already!
Answer:
Which of the following are examples of early technology?
→ the Fertile Crescent
