Simplify the following text for a Grade 9 native English-speaking person.
Original: In the US , those that distribute at this time may publish a supplemental insert with photographs from spring sports and milestone events ( such as prom and graduation ) , as well as other important events .
Simplified: In the U.S. , those that distribute at this time may publish a supplemental insert with photographs from spring sports and milestone events ( such as prom and graduation ) and other important events .