A. Slave Trade seems to be the only logical choice.
The man did not lead an empire like a Muslim leader should have.
More organize and much more control over the nation also all choices and useless law that were made by one man (monarch) Is no more.
The answer I think is c. Studies show that they think the earliest the entered is about 33,000 years ago
Despite the fact that the Spanish utilized some Hindu-Arabic images as right on time as the late 900s, records of a more broad utilization of these images happened around 1202. Italian mathematician Leonard of Pisa (otherwise called Fibonacci, c. 1170-c. 1250; for additional about Fibonacci, see somewhere else in this section, and furthermore in "History of Mathematics" and "Arithmetic all through History") presented the Hindu-Arabic numbers in his book Liber Abaci (The Book of the Abacus). The acknowledgment of such a numbering framework was troublesome. For instance, in a few places in Italy, it was taboo to utilize anything other than Roman numerals. By the late fifteenth century, a great many people in Europe were all the while utilizing a math device and Roman numerals.
The sixteenth century was the defining moment, with European dealers, surveyors, clerks, and vendors spreading the utilization of the Hindu-Arabic numerals. All things considered, it took more time to record information utilizing Roman numerals than with Hindu-Arabic numbers. The coming of the printing press likewise helped by institutionalizing the way the Hindu-Arabic numbers looked. By the eighteenth century, the "new" numeration framework was dug in, building up a framework that commands the way we work with and see numbers in the 21st century. (For more data about Hindu-Arabic and Roman numerals, see "History of Mathematics.")
