Dear [insert friends name],
In the United States for Independence Day we usually celebrate celebrate it with fireworks, parades, barbecues, carnivals, fairs, picnics, concerts, baseball games, family reunions, political speeches, and ceremonies, in addition to various other public and private events in order to celebrate our history, government, and traditions in the United States.
Hope to learned a lot and can’t wait for your reply
[signing off appropriate for the relationship],
[your name]