This is a Heat map of Norway Maple trees. They were originally found in Europe and western Asia, and got here by people bringing the seeds. There is a Norway Maple tree in Hopkinton, in the parking lot of HMHS (Hopkinton Middle High School). It has become an invasive because its roots have taken over too much land for other plants, and by taking too much sunlight around the edge of forests, that then kills the plants around it. You can stop this plant's spreading by pulling them from the ground when they are just starting to grow big. This picture is my sketch of Norway Maple and Sugar Maple leaves. (The green one is the Norway Maple) The Norway Maple has the seeds that kids call "helicopters." According this website:https://concordma.gov/789/Norway-Maple-Acer-Platanoides, "Norway maple was originally introduced into North America by botanist John Bartram of Philadelphia who received seedlings from Philip Miller of London in 1756. He sold 2 Norway maples to George Washington in 1792 for planting at Mount Vernon and soon the tree became one of the most popular street trees. It tolerates poor soils and air pollution and was originally planted to replace Elms when Dutch elm disease decimated our street tree population."