Mayflower was a big boat that sailed across the ocean a really long time ago, when people didn't have planes or cars to travel in. It was a special kind of boat called a "ship" that was used to carry people and things from one place to another.
So, in the year 1620, a group of people called "Pilgrims" sailed from a place called England to a new land called America. They went on the Mayflower boat, which was really big and had three masts (like really tall poles) and a lot of sails on them.
The Pilgrims travelled for a very long time on the boat, and it was very crowded and uncomfortable. They didn't have beds, so they had to sleep on the hard floor. They also had to cook and eat their food on the ship, which was pretty hard because the ship was always moving in the water.
When the Pilgrims finally arrived in America, they had to start from scratch and build new homes and learn how to grow their own crops. It was a hard time for them, but they persevered and eventually built the beginnings of the new country of America.
Mayflower is very important because it represents the first time people from Europe came to America to start a new life. It also represents the bravery and hard work of the Pilgrims who were determined to create a better life for themselves and their families.