The 100 Years of Blank History
All 3 of these are directly related, I believe, and we will learn more about them in the future. For now, though, we can only guess. Here's my theory:
It happened 800 years ago. The entire world was in one piece ( lol ), and there was a sense of peace and self governing within this place. Then, one day, 5 men came to a rise in power.
These men had made a deal with Satan, and, by giving up to his will, been given extremely powerful weapons to use at their expense to rule the world. It was called Pluton. And thus, they did rule it very well. However, these governing bodies were not kind ones. They were extremely strict, outrageous in laws and taxes, and made themselves gods. The world went from peace to distress.
Then, one day, a group of people came together and started to plan the first revolution. These people were crazy, extremely hopeful, and wanted the feeling of freedom. This group that gave themselves something to distinct them. It is the Initial D. Since the weapon that was being used by the government was a land weapon, these people decided to use a different attack route, one by sea, thus becoming the worlds first Pirates. The D. Group was quite the sucess, taking out many government facilities. Even though they were made of only a few people, they considered themselves family ( // Saulo ).
The government seen what was going on, and realized they couldn't stop this. So they asked Satan for something else, something more powerful to stop the uprisings. Their wish was granted, and thus they recieved another weapon. It was called Poseidon.
Poseidon was a sucess. Now, the Pirates on sea and the Revolutionaries on land were held back. A plan had to be made.
The leader of the D. group decided that they would do a final strike. They would head to the source of the destruction and take out the government once and for all. So all of the D's came together, and they attacked.
The World Government became aware, and attacked with both of their weapons. It was war. This was the wore that lasted 100 years. The after effect was devastating.
The weapons were so destructive that the entire world was nearly destroyed. The land was split in many places, some places completely obliterated. This created the Grand Line, Calm Belts, Red Line, and the rest of the blue seas.
At the very last year of the 100 year war, the government had destroyed even themselves, and vanished. Most of the D.'s also were killed, and many other people also. Even the Devil himself was involved in the terrible war, and he perished.
Some of the last few D.s hid the weapons after realizing that they could not be destroyed no matter what they tried to do. They realized that the government had caused almost the end of the world, and thus wanted the future to realize that freedom is truly the only way to live. They created the Poneglyphs and scattered them across the world, describing this terrible time and what had happened.
Then, out of nowhere, the government arose again. They were the same people who were there before the war, and they were very much alive. This time, they realized, they could not depend on their weapons because of Pluton and Poseidon had vanished. Even the Devil, who they frequently depended on, had died in the terrible War. But, they still created one thing.
They formed the worlds first Navy. This Navy was formed after the government made a speach, telling how they see this new world as a place of hope and peace and Absolute Justice! Thus, people allowed it, and it was created as so. It quickly grew. They also created new laws, one of the first being that no one could read the Poneglyphs. They wanted no disruption.
It was also realized at this time that some of the people of the world were different. People started reporting terrible curses. It was quickly discovered that fruits were causing people's to become gentically altered in some way. They were dubbed Devil Fruits, and the government realized that they had come from the last stregnth the Devil had before dying in the Great War. These fruits were part of his own body.
The government realized the darnger of these fruits existing. If the newly formed pirates ate these fruits, and enough of them formed together, along with D.s, then they could fall this time. So they made a plan to collect all of the fruits and use them for themselves. However, they quickly realized they were spread all across the world, and there was no chance for them to collect them all. So, they created something else.
For some reason, the people who ate fruits were made immobile when submerged in water. It was said the Sea, the endless vast FREEDOM, was the opposite of the Devil, the being who had helped the old government. Because they were opposites, they made the user of the Devil Fruit immobile when submerged.
So, since the government could not collect all the Devil Fruits, they created something different. Sea Stone. They discovered that by hardening sea water with a special technique, they could create stone that gave off the same radiation the ocean seemed to. This wiould become the government's new weapon against those who ate the Devil Fruits.
Time passed, pirates formed, revolutionaries were created, the Navy grew larger, the world expanded.
And thus, time fades into where we are now.