It was first the email system, and then the internet which gave us access to information despite taking longer time to respond, and then websites which helped business and private individuals, then mobile phones making communication easier, then social media where its about describing yourself and communicating through photos and stuff, then smartphones which not only helped in the communication system but also online banking, online shopping etc, and then Skype with which we can now have a video conference with colleagues and families no matter where they are.
<span> (1) large </span>population center<span>s; (2) </span>monumental architecture<span> and </span>unique<span> art styles; (3) written language; (4) systems for </span>administer<span>ing territories; (5) a complex division of </span>labor<span>; and (6) the division of people into social classes.</span>
The answer is C: Companies can make many more items than before
Expanding the scope of trade can also decrease costs, if resources or products are limited and expensive in one place but abundant and cheap somewhere else or if people in one place are willing to accept a small amount of payment for their work than in another.
Answer;
Radio networks
Explanation;
-Magazines were america s only national medium from the 1890s until the 1920s when radio networks was/were established.
-Radio network became an accepted commercial medium during the 1920s. Initially many thought it was too intrusive a medium to allow advertising, as it entered people’s homes by the end of the decade, advertising had become an integral aspect of programming.