Do you know that Iranians are the first nation which:
1- had made alphabets 7000 years ago in south of Iran for the first time
2- had discovered fire in the world
3- China wall had been built by enjoyment of the wall made by Cyrus in north of Iran 544 B.C to prevent invasion of northen troops
4- had offered horse to the world
5- had made ships by order of one of the queens of Iran
6- had discovered continent America and Christopher Columbus and his friend decided discovering America by reading Iranian's books in Vatican library
7- had got the sphericity of the earth
8- had made perfumes to have fragnant bodies
9- had discovered coal
10- had built the first technical school by Cyrus the Great in order to teach technique and art
11- had invented farming for implanting and withdrawing crops
12- had discovered glass and used it in their houses
13- had discovered copper
14- had discovered the scale of measurment of objects
15- had invented water disposal system in order to evacuate the city water to out of the city
16- had treated pet animals and used them to reap the benefits of them
17- had started melting metals in a city called Silic around Kashan
18- had invented cotton and been successful in spinning and weaving it
19- had started coining money for the first time
20- had invented the first cavalry military force with 115 soldiers by Saame-Irani

There is another article like this one in PERSIAN GIRLS blog..don't miss to read it ..