Joseph Henry in about 1835. He is American and he made something called a relay.
Answer:
<!DOCTYPE html>
Explanation:
<!DOCTYPE html> is used in the HTML5. It is the document type declaration markup statement for an HTML5 file.
Answer: C) Real-time editing
Explanation: Real-time editing is when two or more people work on thesame document live and simultaneously, this means that each user is able to work on thesame piece of document right from their individual devices at the same time with automatic and instant merging of their individual input. Google uses this feature in Google docs; which allows one to share notes and research with other users allowing them to work on the document from their individual devices live and simultaneous.
