He determined that the laws of physics are the same for all non-accelerating observers, and that the speed of light in a vacuum was independent of the motion of all observers.
Answer: Don't Listen to the other answers. The Washington Monument in D.C. is an Obelisk modeled after ancient Egyptian Monuments.
Explanation:
The people who lived there generally believed that it was a safer way
The European Union can be regarded as political and economic union which consists of 27 member states , and the base is situated primarily in Europe
It serve as trade agreement which unites all European countries having single trading goal. Credits: ayfat23