Answer:
HIV is a virus that attack the cell which helps to fight against infection and make person suffer from others infections and diseases.
Aquired immunodeficiency syndrome is the Aids caused by HIV virus that is chronic.
If the natural quality of water is destroyed by mixing unwanted and harmful substances in water, it is called water pollution.
The loyal knights, or the people who serve under them
They wanted to find precious metals
The founders of the US most likely took ideas from the Romans because their system allowed for the citizens to have a voice in who ran their empire. Considering that the US just broke away from Great Britain when starting a new country, they wanted to ensure that their citizens had a voice. When the Americans were colonists, they had little/no influence on government policies and laws.
The Romans established a republic for very similar reasons, as they had a tyrannical king who they overthrew. With a new start, the Romans created a government where people got to elect political officials, there were term limits for the two consuls, and the Senate (comprising of 300 people) had the chance to make laws. The United States probably saw this as a highly effective system in which multiple voices could be heard, so they based our foundation on the ones created by the Romans.
The overall aim of the liberal reforms of 1800s was to eliminate corruption in both big business and in the government. Although they weren't very successful, they brought awareness.