Question

read the passage. for centuries, humans have sought efficient ways to send messages across great distances, sometimes turning to nature for solutions. one of the most remarkable methods has involved the use of homing pigeons, birds with a natural ability to return to their home roost even from many miles away. in ancient egypt and persia, these pigeons carried critical messages, aiding rulers and merchants in maintaining communication. their role became even more vital during wartime, particularly in world war i, when soldiers relied on these birds to transport military intelligence undetected. some pigeons, like the famed cher ami, even saved lives by delivering crucial messages under fire. the long history of pigeon - based communication reveals humanitys inventiveness in adapting natures abilities to serve practical and strategic needs. what is the main, or central, idea of the passage? homing pigeons played a crucial role in world war i by carrying secret messages across battlefields. homing pigeons possess extraordinary navigation skills that allow them to find their way home from great distances. throughout history, people have used homing pigeons as a reliable means of long - distance communication. ancient civilizations, including egypt and persia, were among the first to recognize the usefulness of pigeons for communication.

Explanation:

The passage starts by stating humans' long - standing search for long - distance messaging methods and how homing pigeons were used. It gives examples from ancient Egypt and Persia, and then World War I, showing their use as a reliable communication means over time.

Answer:

Throughout history, people have used homing pigeons as a reliable means of long - distance communication.