·berber · nubian · arabic · egyptian which would be the best title for this list? a) major ethnic groups of north africa b) major ethnic groups of southeast asia c) major ethnic groups of the middle east d) major ethnic groups of the indian subcontinent

The correct answer is A. These are the major ethnic groups of North Africa.

Berbers, or Amazighs, are an ethnic group indigenous to North Africa, primarily inhabiting Algeria, northern Mali, Mauritania, Morocco, northern Niger, Tunisia, Libya and a part of western Egypt.

Nubians are an ethnolinguistic group indigenous to present-day Sudan and southern Egypt who originate from the early inhabitants of the central Nile valley, believed to be one of the earliest cradles of civilization. They speak Nubian languages, part of the Northern Eastern Sudanic languages.

Arabs are a population inhabiting the Arab world. They primarily live in the Arab states in Western Asia, North Africa, the Horn of Africa, and western Indian Ocean islands.

Egyptians are an ethnic group native to Egypt and the citizens of that country sharing a common culture and a common dialect known as Egyptian Arabic.

the answer is d.index

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