Answer:
How was the communication during 20th century?
continued to use telephone, telegraph, radio,typewriter. People also used trains for paper mail. the graph shows which communication systems use most past few years.
The history of communication itself can be traced back since the origin of speech circa 100,000 BCE. The use of technology in communication may be considered since the first use of symbols about 30,000 years BCE. Among the symbols used, there are cave paintings, petroglyphs, pictograms and ideograms.
Explanation:
How has communication changed in the 21st century?
With the global technology advancement, there is a great shift in communication in the 21st century. There has been the development of social media platforms where people engage in charts and exchange ideas and life experiences. These social media platforms have changed the world into a global community.
