The sumerian language died out in about 2000 bce, but cuteiform survived for another 2000years, how is that possible?

Cuneiform was used as a form of record-keeping and it was picked up by the speakers of different languages.  This helped to perpetuate it across different cultures. Today it is largely preserved on stone tablets whereas other exemplars of early languages were kept on more perishable materials like leather or papyrus.  

Explanation:

Cuneiform was a language that many societies in the Ancient Near East had in common. The cuneiform style was so dominant that scholars have said that it is the script for the first half of recorded history.  Even to this day,   cuneiform tablets survive in great abundance. The cuneiform script was not in itself a language. Scribes from different cultures could decipher and use it to convey information in a  number of languages and not just ancient Sumerian. Among them is the Semitic language  Akkadian which was the lingua franca of the Assyrian Empire and for the Babylonians. The Rosetta Stone equivalent for cuneiform is Bisitun Pass in Iran. There there are inscriptions recorded in Persian, Akkadian, and an Iranian language known as Elamite. This allowed researchers to decipher repetitive words across the different languages like “Darius” and “king” and so they could eventually piece together the information that cuneiform conveyed.

6.3%

explanation:

the acceptance rate for yale university is 6.3%. this means that only 6 percent of people who apply actually get accepted!

question - in 1827, john walker, a druggist in a small english town, tipped a splint with sulphur, chlorate of potash, and sulphid of antimony, and rubbed it on sandpaper, and it burst into flame. the druggist had discovered the first friction-chemical match, the kind we use to-day. it is called friction-chemical because it is made by mixing certain chemicals together and rubbing them. although walker's match did not require the bottle of acid, nevertheless it was not a good one. it could be lighted only by hard rubbing, and it sputtered and threw fire in all directions. in a few years, however, phosphorus was substituted on the tip for antimony, and the change worked wonders. the match could now be lighted with very little rubbing, and it was no longer necessary to have sandpaper upon which to rub it. it would ignite when rubbed on any dry surface, and there was no longer any sputtering. this was the phosphorus match, the match with which we are so familiar. according the paragraph what was the benefit of the new phosphorus match? it burst into flame when rubbed on sandpaper. it was made by mixing chemicals. it could be ignited on any dry surface. it threw fire in all directions.

answer - matches required natural chemicals