Final answer:
The simple invention for almost instant communication is the telephone, created by Alexander Graham Bell in 1876. It revolutionized communication, with numerous advancements leading to today's cell phones, enabling text messaging and calls from nearly any location.
Step-by-step explanation:
The simple device of invention that is used for almost instant communication is the telephone. Invented by Alexander Graham Bell in 1876, it has gone through significant advancements, from the early telegraph to modern smartphones, enabling communication across long distances without delay. The estabishment of the first transatlantic telegraph line in 1858, followed by the spread of the telephone, transformed how people connect globally. Over time, technologies like microwave transmission, satellites, and Bluetooth have further enhanced wireless communication capabilities. Today's cell phones and texting are the culmination of this evolution, allowing for communication in a wide range of environments and situations, thus becoming ideal devices for instant messaging.