Hey there! I'll explain the Hague Conventions of 1899 and 1907 in a way that's easy for a five-year-old to understand.
Once upon a time, there were many countries in the world who didn't always get along with each other. They sometimes fought wars against each other, which meant people got hurt and sometimes even died.
One day, a group of these countries decided they wanted to make some rules to help prevent wars from being too harmful. So they got together in a city called The Hague in the Netherlands and had a big meeting (like a playdate with lots of grown-ups).
They talked about how to make war more fair and less dangerous for everyone involved. They came up with some important rules, or "conventions," about how wars should be fought. These were called the Hague Conventions of 1899.
Then, eight years later in 1907, they had another meeting to update the rules and add more important things. This was called the Second Hague Conference and they came up with new rules to protect people who weren't fighting in the war, like nurses and doctors. They also talked about how to use new weapons like airplanes and submarines in a way that was less dangerous for everyone.
So, the Hague Conventions of 1899 and 1907 were like a set of rules made by grown-ups to keep wars from being too harmful. It was important because it helped protect the people who weren't fighting in the war and made wars more fair.