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.

What would the United States be like today if none of the founding fathers had been born?

 It is difficult to say exactly what the United States would be like today if none of the founding fathers had been born, as there are many variables that could have influenced the country's development. However, it is likely that the United States would not have gained independence from Great Britain and would not exist as a sovereign nation.

The founding fathers played a crucial role in the establishment of the United States as an independent nation. They were instrumental in the drafting of the Declaration of Independence, which outlined the colonies' grievances with Great Britain and declared their intention to break away from the British Empire. They also played a key role in the drafting of the Constitution, which established the framework for the new federal government and laid out the principles and values upon which the country was founded.

Without the influence of the founding fathers, it is possible that the United States would have remained a British colony or that it would have developed into a very different nation with a different system of government and different values. It is also possible that the country could have splintered into smaller, independent states or territories rather than becoming a unified nation. Ultimately, it is impossible to know for certain what the United States would be like today without the influence of the founding fathers.