There were three Nebuchadnezzar's who reigned. Assuming that you are talking about Nebuchadnezzar I, he reigned during 1125 - 1104 BC.
The following are correct:
A moat filled with water from the Euphrates River surrounded the city.
Walls around the city provided protection from enemies.
It is true that for the first 50 years after the ratification of the Constitution, Representatives and Senators usually only served for short periods of time because of difficulty in travelling and accommodations.
<u>Explanation:</u>
When the constitution was ratified, for a long period of around fifty years, the officials of the government which were the senators and the representatives used to serve the period only for a very short period of time.
The reason for this is that the travelling during that time from one place to another was very tough. Moreover the condition of the capital of the United States of America was very bad and the representatives chose to return to their local offices.
in my words they were shooketh.
but in school words:
The news of the Boston Tea Party reached London, England on January 20, 1774, and as a result the British shut down Boston Harbor until all of the 340 chests of British East India Company tea were paid for. This was implemented under the 1774 Intolerable Acts and known as the Boston Port Act.