1) The speed of light is approximately 299,792,458 meters per second.

2) The Bank of England, established in 1694, is the central bank of the United Kingdom and one of the oldest central banks in the world.

3) The political system of the People's Republic of China is based on the Communist Party's leadership, with the General Secretary holding significant authority and influence over the country's policies and governance.

4) The signing of the Magna Carta in 1215 laid the foundation for modern democratic principles and limited the powers of the monarchy in England.