What's the difference between American tap dancing and Irish tap dancing?

After nearly a hundred years of development, tap dancing has formed different styles and schools. The oldest school originated in the United States and was called hoof in the early days. This genre originated from the lower classes in the United States, mainly a combination of Irish folk dance and African black dance. The form of this genre is relatively open and free, without too many stylized restrictions. Dancers don't pay attention to body dancing, but show off the complex skills of rhythmic beating under their feet. They often gather in the street to compete with each other. Its overall dance style is relatively simple and loose. Later, in the long-term development, this school was constantly influenced by many factors, and gradually formed a very rich dance form, becoming a tap dance school with a strong "black flavor" representing the United States. For example, the influence of cowboys in the western United States, such as the influence of black traditional drum rhythm and so on. Perhaps the most important influence is jazz. Tap dancing absorbs jazz rhythm, improvisation and other elements, which is more entertaining, more open and challenging. Tap dance, later incorporated into Broadway stage performance, can be called Broadway-style tap dance. Its overall style is singing and dancing. In addition, there are many humorous arrangements, which are generally filled with a cheerful atmosphere. In order to enhance entertainment and appreciation, Broadway tap dance began to pay attention to the modification of body dance, such as the swing of crotch. Some more "rustic" and "ugly" dances were deleted. In addition, Broadway tap dance also increased the use of props and scenery to meet the needs of stage performances. During the period when Hollywood musicals were popular, tap dancing also appeared on the screen. It basically continues the style of Broadway and brings countless joys to movie audiences. Irish-style tap dance is unique because it retains a strong Irish folk dance tradition. Its important feature is that it retains the body dance and dance steps in Irish folk dance: the upper body is basically straight, the dance steps are mainly calf movements, and the arm movements are simple and mostly linear movements. Its dance steps are full of jumping, lively and cheerful. Music also uses traditional Irish folk music. Irish-style tap dance is a unique genre different from American tap dance. Tap dancing is a native American dance, which has been developed for nearly 300 years. Tap dance appeared in the southern United States in the early18th century. It was originally a fusion of traditional music and footstep dance introduced to the United States from Britain and West Africa. Irish jig dance (a form of music and dance) and West African gilby dance (religion and footstep dance in life) evolved into American jig dance and Juba dance. These changes are integrated into a dance form, also known as "jig dance". This dance form was used by black and white dancers in comic rap groups in the early19th century, and tap dancing developed into a popular stage entertainment art in the19th century. Early style tap dancing wore hard shoes, clogs or flat-bottomed spikes. /kloc-at the end of 0/9, metal pieces began to appear on the soles, and then became popular among young people and appeared on the Broadway stage.