They let the other people know if they are an enemy or an ally, especially in war.
yes,the medieval people use birds to send messages.
Flags originally came into use for military reasons. Flags helped with co-ordination on the battlefield. It was later found that flags were also useful for identification and announcement of allegiances. This made flags incredibly useful on ships.
Flags that meant distress and assistance needed.
They could send messages using it by telegraph and ships used it. If you know Morse code you don’t have to say anything, but can use lights to send the dots and dashes that make up Morse code.
drums
A ship's signal is commonly referred to as a "signal flag" or "flag signal." These flags, often part of the International Code of Signals, are used to communicate messages between vessels and convey important information about navigation, safety, and emergencies. Additionally, ships may also use light signals or sound signals, such as horns or bells, to convey messages in various conditions.
The original use of semaphore was invented around 1792 by Claude Chappe. The use of semaphore flags was brought about during the 1800's on ships at sea.
The use of vibrations to send messages is an example of mechanical energy. Mechanical energy is the energy associated with the motion and position of an object.
Use picto chat
Cardboard Fish SMS allows one to send international text messages for free. If you use their website, one can send text messages to a variety of different countries at no cost.
you keep in touch talk send gifts to each other and just do that and send email messages send each other video messages or use webcams or stuff like that.
In maritime contexts, signal flags are used to communicate messages between ships or between a ship and the shore. In theatrical productions, a signal flag might be used to indicate the start of a performance, cue transitions, or alert stagehands to specific actions. The use of flags can enhance the visual storytelling and create a sense of atmosphere, particularly in nautical-themed productions.