"Beyond a reasonable doubt" which a legal standard of guilt in Texas was used in criminal cases. It is the standard that should be met by the evidence of the prosecution in a criminal case. This means that there should be no other logical explanation that can be derived from facts not including the fact the suspect or defendant committed such crime.
Located in South East Asia and approximately 10,000 miles away from the Continental United States the Vietnam climate and geographical plains made it hard to travel and transport supplies.
Much of Vietnam, especially the mountains is covered by dense jungle (The Embassy of the Socialist Republic of Vietnam in the United Kingdom) Has 2 major rivers used largely for transportation.
Southern Vietnam was bordered by Laos and Cambodia and Was divided by the US military into FOUR sections making communication and back up difficult. also, the United States at the time were not trained widely for jungle battle, and were extremely vulnerable for surprise attacks.
The correct answer is B) civil liberties.
Civil liberties are constitutionally guaranteed protections against the abuse of government power.
Civil liberties were included in the Bill of Rights that are the first ten amendments to the United States Constitution. The Bill of Rights guarantees freedom of speech, freedom of the press, freedom of religion. The Bill of Rights was written by James Madison to protect the liberties and rights of the American people against the abuse of power of the government.