"e pluribus unum" is a Latin phrase that means "out of many, one." It is a saying that has been used in the United States of America for a very long time. This phrase means that even though there are lots of people, they can still come together and be united as one big group, just like puzzle pieces that fit together to make a beautiful picture. Think of it like a sports team - there are lots of players on the team, but they all work together to win the game. So, just like the players on the team, people from different backgrounds, cultures, and religions can also come together to make a great and strong nation.