Gridiron (American football) bases alot of it principles on Rugby. one cannot however say union as there alot of similarities with rugby league. the similarities are somewhat due to Americas independence and wanting to be different. when people emigrated to America they brought with them rugby however along the way some of the rules were forgotten and so new ones made up. a vague answer but a difficult question
Yes Gridiron did originate from Rugby Union.
American football is derived from an English game called Rugby Union. In Rugby the equivalent to a touch down is called a try. To score a try you have to "touch the ball down" on the ground.
The team sports of football, tug of war, and rugby union debuted at the 1900 Games in Paris.
basketball, wrestling, football (soccer), rugby union.
If you mean 'American football", it evolved from English rugby. The first recorded game was between two US universities in 1869. The game got its more or less present form and rules in 1882. If you mean football as the rest of the world knows it - and called 'soccer' in the US - it has ancient roots and forms of it were already played more than 2,000 years ago in ancient Rome, Greece and China. The first set of modern rules was drawn up in Cambridge in the UK in 1848. The 'Football Association Rules" were first drawn up in 1863. As an aside to this, the RFU (Rugby Football Union) which was the originator of the game (Rugby) as we know it to day and as stated above was the model used for American Football actually was created because of the Football Associations Rules being implemented as at the time the game of Rugby and football were actually the same game. It was a decision to only allow kicking of the ball, handling was an offence and tackling and bringing the ball carrier down that forced those that loved the game to form the RFU and seek out their own rules. These were formalised in the same year as foorball (Soccer)
Canadian (not just CFL) football was not 'invented.' It developed over many years, just like American football did. Countless numbers of people were involved in the development of both the Canadian and American games.
Rugby Football Union was created in 1871.
Rugby actually preceded games which use some of the principles such as American football Gaelic football. There are two related types of Rugby. Rugby League and Rugby Union.
The Canterbury rugby shirts are made in New Zealand, the Canterbury Rugby Football Union originate from New Zealand.The union was founded in 1879, their current CEO is Hamish Riach.
There are three types of football in Britain. Football which is known as soccer in the US and Canada, American Football which is also called GridIron, and Rugby Football which is subdivided into Rugby Union and Rugby League.
Bush Rugby Football Union was created in 1890.
Wanganui Rugby Football Union was created in 1888.
Canterbury Rugby Football Union was created in 1879.
Japan Rugby Football Union was created in 1926.
Taranaki Rugby Football Union was created in 1885.
Auckland Rugby Football Union was created in 1883.
Niue Rugby Football Union was created in 1952.
Rugby Football Union for Women was created in 1994.