Social aspects History 23 Automobiles 16 Cell phones 11 Internet 8 Technological innovations 8 Television broadcasting 8 Mais ... Telecommunication 7 Transportation, Automotive 6 Information technology 5 Interpersonal communication 5 Telecommunication policy 5 Television 5 Transportation 5 Economic aspects 4 Information superhighway 4 Mobile communication systems 4 Railroads 4 Wireless communication systems 4 Communication and culture 3 Computer networks 3 Environmental aspects 3 Government policy 3 Roads 3 Cell phone services industry 2 City and town life 2 Communication 2 Cultural landscapes 2 Cyberspace 2 Express highways 2 menos ...