Scotland was once a sovereign and independent country, so was England. At that time, there was no concept of "Britain". Britain was a geographical concept rather than a political concept.

Later, Queen Elizabeth I died. She was unmarried for life, had no children after her death, and had no clear heir. The British nobles decided to choose Elizabeth I's nephew, and then Scottish King James I succeeded the British king. In other words, James I is the king of England and Scotland at the same time, but the two countries are still independent of each other. In the following 100 years, there were constant disputes between England and Scotland, and British politicians tried to merge England and Scotland many times, but failed. During the reign of William III, Minister Godolphin and Minister Marpolo put forward a bill on the merger of England and Scotland in Parliament, which was passed by the English Parliament in 1707. After a long debate, the Scottish Parliament also passed a treaty on merger. 1 May 7071day, Scotland and England formally merged. After the merger, England and Scotland became one country. Scots can produce 16 members of the upper house and 45 members of the lower house to participate in the parliament. Free trade and unified tariffs between the two places. In this way, since 1603 England and Scotland had monarchs, they now have parliaments and a unified economy. However, Scotland still retains its own legal system and religious beliefs.