Based on the sentence of the excerpt,
The main purpose of the final sentence from Thomas Paine's common sense would be :
To indicate that the American colonies can establish a better government thana monarchy
Hope this helps
c. Cosmology is the answer
Dozens killed in fighting in Afghanistan as peace talks continue. Clashes erupted overnight in Nangarhar province when the Taliban attacked checkpoints of Afghan forces, official says.
They all refer to the different types of government systems there are. An example would be that the United States has a a federal government system because both the state governments and national government share equal power.