Was Crocodile stronger at Marineford? Or was he holding back in Alabasta?

 During the Alabasta arc, Crocodile displayed a level of power that was initially considered overwhelming by the Straw Hat Pirates. He possessed the Logia-type Devil Fruit called the Suna Suna no Mi (Sand-Sand Fruit), which granted him the ability to control and transform into sand. He had a reputation as a Shichibukai and controlled the desert kingdom of Alabasta from the shadows. His strength was showcased through his battles with Luffy and others. At Marineford, Crocodile was present as part of the war that took place at Marine Headquarters. While he did participate in the battle, he didn't display the same level of dominance as some other powerful characters present. This has led fans to speculate that he might not have been as strong as initially portrayed in Alabasta. It's important to note that power scaling and character abilities can be subject to interpretation and development by the author. Oda often keeps details deliberately open-ended to keep the story intriguing.

Who invented first football?

 The origins of football (also known as soccer) can be traced back to ancient civilizations, where games involving a ball were played as early as 2500 BC. However, the modern version of football as we know it today emerged in England in the 19th century.

The first set of written rules for the game of football were drawn up at Cambridge University in 1848. These rules stated that the game should be played with a round ball and that players should not use their hands to touch the ball, except for the goalkeeper.

The first professional football league was established in England in 1888, and the first international football match was played between Scotland and England in 1872.

Since then, football has become one of the most popular sports in the world, with millions of people around the globe playing and watching the game.