1) The first modern health insurance policy was introduced in Germany in the late 19th century.

2) The Internet of Things (IoT) refers to the network of physical devices, vehicles, appliances, and other objects embedded with sensors, software, and connectivity.

3) The unicorn is the national animal of Scotland.

4) The study of fossils is called paleontology, and it helps us understand the history of life on Earth and the process of evolution.