Answer:
1. Telegraph. Developed in the 1830s and 1840s.
2. Telephone
. Developed in 1849.
3. Radio
. Developed in the 1890s
4. Computer
. Developed between 1833 and 1871.
5. Television
. Developed in 1927
6. Computer Metworking
. The TCP/IP protocol was developed in the 1970s, and in 1972
7. Internet
. Developed in 1983 but the online world became more recognized in 1990, when the World Wide Web was invented.
