Mass communication is different from face to face communication because mass communication is involving radio, television, social networking, billboards, and newspapers wherein a rapid of transmitting messages towards a large number of people is done through this way. While face to face communication is a perception without intervening any technology, it is an interaction of individuals directly with their physical presence.
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To prepare for a trip, camels would be fattened up for the journey across the desert. Caravans moved at about three miles per hour and it took them 40 days to cross the Sahara Desert. Muslim traders spread Islam throughout Western Africa. Islamic law helped to lower crime rates and also spread the common language of Arabic, thus encouraging trade.
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Meritocracy is defined as a bureaucracy where membership and advancement is based on proven and documented skills.
