Why did they invent Ullamaliztli?
The Aztecs ball game Ullamaliztli, was invented mainly for political and religious reasons. It was political in only some ways like it would be used to settle conflicts between two parties or in ways like bets and wagers on marketplace or gardens etc., but in such condition the marketplace or the garden will be lost and the winning party gets to assassinate the other party same with the game. It is religious because they thought that sacrificing keeps the sun moving (Aztec ball game 20/5/12).
What were the effects?
The effects of the game were very easy to guess such as, many people got sacrificed and the sun kept moving (Aztec ball game 21/5/12).