I think the answer to this question would be true
The Inca culture was one of the most developed in pre-Columbian America. Among their achievements, was their architectural ability. Inca structures were made of stone that fit together, with extraordinary stability. The buildings have survived for centuries, with no use of mortar, in areas that are prone to earthquakes and volcanic activity.
The Inca also developed calendars based on astronomical observations. Astronomers understood equinoxes, solstices and zenith passages. Numerical information, particularly for administration, was stored in <em>quipu</em> strings.
In terms of art, Inca ceramics were highly advanced, although most of their silver and gold work was melted down by the Spaniards.
They were also advanced in medicine, performing skull surgeries successfully and with high survival rates.
There are many moral standings and ideals that existed in the last that are completely at odds with what we think today. Or there were ideas on face and science that are just completely strange in comparison with today's ideas. Primary resources don't show a complete picture, because there are always gaps that need to be filled along the way. For example, a lot of primary sources and writing for Viking cultures were written by Christian writers, so it doesn't offered a clear perspective on the pagan side.
Mali had acquired a reputation as a fabulously wealthy empire, ruled by a generous and pious sultan, Mansa Musa.He had expanded his boundaries all sides and acquired the cities of Gao and Timbuktu. The kingdom was considerably rich in gold. Mansa Musa also producing controlled the salt producing areas.
<span>Because they had threatened him.</span>
