How can you get your game to know when there's no more players on a team left?

For example, if a person was on the blue team and they died, which changed them to the red team, what script would allow the game to recognize that there are no more players on the blue team and then execute commands.

Here's what I've tried

player.Character.Humanoid.Died:connect(function()
    player.TeamColor = BrickColor.new("Earth green")
    if #game.Teams.TeamA:GetPlayers() < 1 then
        -- run code for what happens when it reaches 0
    end 
end)