Indians were a big challenge to thoose pioneers many people died and eventually reservations were made
Some of the similar physical features that Mexico (a country) and Kentucky (a State) shares are: both have borders formed by rivers, and are located over tectonic plates, that make both vulnerable to earthquakes. The main differences are the territory (Mexico almost 750 thousand sq mi whereas Kentucky 40 thousand sq mi), climate, topography, and biodiversity.
In 1931 Japan invaded the Chinese in search of raw materials for its growing industry. By 1937 a large section of China was controlled by Japan and war crimes against the Chinese had become fairly common. Many believe that this ended up contributing to the isolation of Japan. This incident is said to have not been authorized by the Japanese government but many say the Japanese troops decided themselves.
The large stone structures created by the Neolithic Europeans are called the Stonehenge. It was built around 4500 - 4000 years ago. It's a circle of stones also known as the megalithic monument.