Dave and his wife are expecting their first child this week, but Dave had to attend a very important meeting in Mexico City. While in Mexico, Dave was able to check his phone for text messages every hour, and as soon as his wife went into labor, he was able to return home in less than six hours. The refers to this "shrinking" of time and space as air travel and electronic media have made it easier for people around the globe to communicate with one another.

The global village refers to this "shrinking" of time and space as air travel and electronic media have made it easier for people around the globe to communicate with one another.

Explanation:

The term global village is used to refer to the fast interconnection between people or places. That interconnection is a result of technological breakthroughs in communication and traveling. People are now able to see, speak to, and move towards others with the aid of all sorts of means. Smartphones, as the one Dave is most likely using in the context given, allow people to send and receive messages without any additional cost as long as one has internet. A couple of decades ago, an expensive call would have to be made to allow Dave and his wife to communicate at such a distance.

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

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