This is incorrect because for an argument to be valid it's premises have to be truthful. Fallacies are logical errors which make the premises untruthful and should therefore be avoided. There are various types of fallacies but most commonly they are divided into inductive and deductive fallacies.
<span>spanning over centuries? I THINK</span>
False- the purpose was to <span>set the boundary of the Louisiana Territory between the US and Canada at the 49th parallel.</span>