Wales were the first country to adopt this. Just before an international Rugby game against New Zealand in 16th December 1905. Following the HAKA the Welsh crowd in unison with the Welsh team sang "Hen Wlad Fy Nhadau - Land Of My Fathers". This appears to be the first time in any international sporting event that an anthem was sung. (Wales won the game 3 - 0).
I believe the visiting teams anthem is played first
The country from which the Gold Medal winning entity (individual, pairs, teams, etc.) represents is honored by playing their national anthem.
The Philippine national anthem serves the same purpose and respect as all other national anthems. It is played before things like sporting events, or school.
I am not sure, but I am pretty sure it is the national anthem of America
1905. Wales played New Zealand in Rugby Union and in response to New Zealand's Haka before the match, Wales sang the National Anthem. Wales went on to win the match and the tradition stuck.
Yes, the National Anthem is played after the medals have been presented; the winning athlete/s' national anthem is played.
At major sporting events. When there are official national occasions. At major memorial services. When the head of state is visiting another country.
Once unless multiple fields or courts with differing start times are being used.
The National Anthem of the visiting country is ALWAYS played first as a common courtesy, the same goes when an American Team visits Canada, the American Anthem is ALWAYS played first, then the Anthem of the host country.
no
Most countries have a National Anthem which is a piece of music, usually with words to match, played on formal occasions. The British National Anthem is "God Save the Queen" The French National Anthem is the "Marseillaise" The American National Anthem is "The Star Spangled Banner"
the first time anthem was played is August 31st 1962