Wales is a very small country compared with some of the other countries in the world.
The population of Wales is around 3.1 million and the world's population is around 7.9 billion.
Here's what 3.1 million looks like in figures: 3,100,000
Here's what 7.9 billion looks like in figures: 7,900,000,000
As you can see, only a very small percentage of the world's population lives in Wales. However, Welsh people have contributed to many different areas including discoveries in science, mathematics and architecture.
Did you know that a Welshman named Robert Recorde invented the equals sign ("=") and that a Welshman drew the map of the moon that NASA used during their Apollo missions in the 1960s?
Heroes like Owain Glyndŵr, the Rebecca Rioters and William Morgan are part of Welsh history and there is a great deal about King Arthur in the historic legends of Wales.
Four Welshmen have won a Nobel Prize and four others have won an Oscar in Hollywood.
A number of Olympic gold medals have been won by Welsh men and women over the years, and many in football and rugby are amongst the world's best players.
Famous Welsh people have certainly contributed a great deal to entertainment as well. Many Welsh actors have acted in films in Hollywood. Have you heard of Rhys Ifans who acted in the film Spiderman? Rhys is a Welshman who was born in South Wales but grew up in the Ruthin area in the North-east. Catherine Zeta Jones and Matthew Rhys are also Welsh and among Hollywood's famous actors.
In browsing the history of Wales and its people in the present and the past, you will see that this small country has contributed a lot to the world stage.
We know that Neil Armstrong was the first person to walk on the moon in 1969. But people had taken an interest in the moon and shared information about it years before that.
A number of Welsh people had contributed to our initial knowledge of the moon.
A man named John Dillwyn-Llewellyn, born in Swansea, and his daughter Thereza took one of the first photographs of the moon. They were interested in photography and astronomy and, by experimenting, they were able to produce a photograph of the moon in 1857.
Another man interested in astronomy was Carmarthen-born Hugh Percy Wilkins. He moved to Llanelli after the First World War, where he developed his interest in studying the moon. He completed several maps of the moon and by 1946 had completed a map so detailed that it showed parts of the moon no one had seen before. This was the map NASA used when they decided where to land during the Apollo missions in the 1960s.
A crater on the moon was named after him.
Tecwyn Roberts was an aeronautics engineer from Anglesey who moved to Canada in the 1950s. He worked at Cape Canaveral and Houston in Texas. He was part of the team working on the Apollo missions in the 1960s. A crater on the moon was also named after him.
Owain Glyndŵr
Owain Glyndŵr was the last Welshman to bear the title Prince of Wales and the last to lead a rebellion against the King of England.
The whole of Wales had been under English control since the death of Llywelyn the Last in 1282 and Edward I, the King of England, built a number of big castles in Wales to try to maintain order and ensure that the people of Wales would not oppose his authority.
Owain was born in 1359 to a family of nobles. Both his father and mother were from families of former Princes of Wales.
Owain's dream was to establish an independent country with its own parliament and he began a revolt against Henry IV, King of England. He was successful to begin with, occupied Harlech castle and established a Parliament in Machynlleth. On 16 September 1400, he was proclaimed Prince of Wales at Glyndyfrdwy. He attacked Edward's great castles in Caernarfon, Conwy and Caerphilly but did not realise his dreams and nobody knows where, how or when he died.
An unofficial holiday is now celebrated in Wales on 16 September each year. On this day the flag of Owain Glyndŵr can be seen flying on Cardiff castle and on the castles of Caernarfon, Conwy and Caerphilly.
There is a statue of Owain Glyndŵr at City Hall, Cardiff and also on the square in the town of Corwen, Denbighshire.
Paralympian inspiring the next generation
Tanni Grey-Thompson is recognised as the best ever female paralympian. She was born with the condition Spina Bifida but has still managed to break 30 world records and win 16 medals at the Paralympics, 11 of them gold.
She won her first medal at the Seoul Paralympic games in 1988 and her last at the games in Athens, Greece, in 2004. A Paralympic career spanning 16 years.
In addition to this, she won the London Women's Wheelchair Marathon 6 times.
Tanni has received several honours as a result of her success. She was awarded an MBE and an OBE for her contribution and in 2005 was given the title of Dame Tanni Grey-Thomson by the Queen.
She won a Lifetime Achievement Award at the BBC Sports Personality Awards in 2019 and was made a member of the Gorsedd at the National Eisteddfod in Bala.
Tanni Grey-Thomson is now inspiring a new generation of para-athletes as a coach. She does a lot of charity work and talks about subjects she is involved with in her various work.