Oral messages were first transmitted Egyptians used a postal system Persians first used a postal system Romans delivered messages using horses and riders The Church developed a postal system Governments took control of the post The post mark was invented The first stamp was used Universal Postal Union was created Airmail was first used People began using the word 'snail mail' https://339efcb25eb75e967b0d-ff8eeadd950d51fd1fc939dca75b3973.ssl.cf1.rackcdn.com/assets_green.swf