Answer:
B. geographic features protected the North China Plain.
Explanation:
The North China Plain is protected on four fronts by imposing geographical feature, which allowed early Chinese civilization to flourish without much external influence or threat.
To the north, the Gobi Desert, to the West, the Chinese Mountains, and the Tibet, to the South, more mountains, and to the West, the China Sea and the Pacific Ocean.
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The cartoon demonstrates early man's ability to trade for his needs and wants.
hope I helped
Generally speaking, cuneiform was probably developed as a means of keeping records of "<span>c. trade and commerce," since this would have had the most pressing impact economically. </span>
Ibn Sina delivered studies of special types of numbers such as even numbers and odd numbers.
Abu Ali Sina, also known as Ibn Sina, was considered the best-known philosopher in the West, and his many such qualities made him different from other philosophers. Apart from his usage of a special number system, Ibn Sina was also known for his Islamic medicine study and was also referred to as the father of modern medicine.
- Ibn Sina also contributed his tenure writing in regard to astronomy, alchemy, physiology, mathematics, and poetry.
- According to Ibn Sina, the most important letters were the first nine letters of the Arabic alphabet because according to his belief, these letters represented the primary gateway to communicating with God.
- His important work entitled Alai in Persian and Kitab Al-Shifa in Arabic contains sections on arithmetic.
- The different types of numbers studied by him were odd, even, deficient, perfect, and abundant numbers.
- Ibn Sina also explained the calculations of different mathematical and arithmetic operations such as divisors, remainder, dividends, and quotients and how to derive the sum and product of the same
- The rule that was laid by Ibn Sina was that if we consider a table then the successive odd numbers are to be placed in a square table and the sum lying diagonally and the total will derive the sum of a cube.
- Ibn Sina also provided knowledge about how to solve numbers arranged in a triangular array.
To learn more about Ibn Sina,
https://brainly.in/question/33356940