Idaho is a state in the United States of America. It started as a part of the Oregon Territory, which was a big area that included parts of modern-day Oregon, Washington, Idaho, Montana, and Wyoming. Over time, Idaho's borders changed as new territories were created and states were formed.
In 1848, the Oregon Territory was created, and it included what is now Idaho. In 1853, the area that is now southern Idaho was part of the Washington Territory. Then, in 1863, Idaho became a separate territory, which means it had its own government but was not yet a state.
Idaho's current borders were established in 1890, when it became a state. Its borders are defined by natural features like rivers and mountains, and by man-made ones like roads and state lines. Some parts of Idaho that were once part of other territories or states were added to Idaho or taken away over time, depending on decisions made by the government and the people who lived there.
Today, Idaho is the 14th largest state in the US, with borders that stretch from the Snake River on the east to the Pacific Northwest on the west, and from the Canadian border on the north to Nevada and Utah on the south. Its varied terrain includes deserts, forests, mountains, and rivers, and it is home to many different species of plants and animals, as well as people from many different cultures and backgrounds.