It means that the military works for the king and not for the people that it should protect. He refers to the King of Britain and the sentence means that he basically uses the army not to protect the people, but as his own personal army to fight wars against who he thinks is the enemy. Instead of military working to protect the people, the military does not have accountability with the people.
Chlorine and Mustard gas are types of poison gas, sometimes used during chemical warfare. For example Germany introduced their usage against the Allies during WW1.
Taking an educated guess here -- I think it would be 1, 3, and 4 which all seem pretty reasonable.
One of the main ways in which economic opportunity divided urban and rural dwellers is that those who could afford to live in the suburbs usually chose to do so, while low-income people who had to work lesser-paying jobs were usually confined to the cities.
Explanation:
Photosynthesis is a process of preparing food by green plants using oxygen, Carbon dioxide, sunlight, water and minerals.