Unfortunately, a day is far too short to move something important, meaningful.

It also depends on whether you were king of the whole world or just one country.

If it were the whole world and only for one day, I would distribute the amount that I will probably need until death and for future projects from the state bank to different banks and procure various capital investments. Then I would change my residence and accordingly buy the entire area in a very generous radius and close the access.

With the resources I have procured, I would fight for the following years for the preservation of nature and wildlife. I would like to finance monasteries and churches and help abused children, women and animals. I would oppose the use of motorcycles, private motorised ships, so-called classic cars, pesticides and many other things that massively pollute the air/water. I would also adopt laws on this day that will make a future stable and mass keeping impossible for all animals. Like horses, cattle, poultry, pigs, minks, etc.

For this purpose, I would have all the rest of the rainforest protected and guarded on the day of my reign. I also take the money from the state bank in advance. And I would work for justice, for people who need help.