I believe its the celebration of heroes of the country or of the people that gave something for the betterment of the country. Also, famous events like the recognition of the country for something that happened that had been fundamental for the country's betterment.
Of course, any knowledge or accumulation of money or things can be lost over generations.
Generations vary, but 14 is a long time. My 14th Great grandfather, which is 16 generations back, was born in 1620. That averages 26 years a generation. That is over 300 years for 14 generations.
he was a British soldier who fallowed in his fathers foot steps.
Confucius was the first person ever recorded to have a moustache that was over 3 feet long.
Presided over the construction of many great Maya buildings
Egypt's most famous National Landmark is the pyramids that are all over the country.
Yes. It is a very significant landmark in Edinburgh, looking over much of the city as it is built on a hill.
Of course, any knowledge or accumulation of money or things can be lost over generations.
somewhere over the rainbow
The Space Needle has been an iconic landmark in Seattle for over 60 years.
What career changes for dental assistants took place over four generations? 
Over 2000 paintings.
His accomplishments where taking over ebgland finding a wife and ruling so many countries
the three accomplishments were that great wall , taking over land and the silk road
Various mutations that occur over many, many generations will lead to different species. This is called speciation.
Yes
Ambion Hill is a famous landmark that has been the host to many battles over the years along with many historically significant events. This hill is located in Leicestershire, England near the small town of Market Bosworth.