Private citizens make up a huge part of the nation, thus they have a big role in managing the environment around them. They could do this in their own little ways such as<em> keeping wastes to a minimum, providing environmental awareness to people by teaching them, reusing things and planting trees. In order to keep wastes to a minimum</em>, the citizen should follow the protocol of segregating<u> biodegradable materials</u> from <u>non-biodegradable ones</u> and avoid putting their trashes along the streets or rivers. The citizen may also spread awareness by posting environmental-related issues on the internet or simply talking about it with friends or family members. Reusing things will also <em>lessen the amount of waste in the environment</em>. One example is by using a chocolate's tin can box into a container for letters or notes. Managing the environment is always interconnected with <em>having more plants and trees in the surroundings.</em> This can only be done if every citizen will try to cultivate his own little garden or plant some trees.
I could be wrong but I am pretty sure the answer is Oil.
Explanation:
After America cut off oil from Japan, due to expansion reasons I believe, Japan got really upset and Pearl Harbor happened if I remember correctly! Hope this helped!! :)