I think the last two sentences is the answer
Answer:
Unity under one government
Explanation:
Having a high opinion can mean that you see the value of something or somebody. <em>Having sufficient power</em> and <em>their own specific interests </em>are restricted to the 1st person singular or plural in a <em>selfish </em>manner. <em>The intelligence of other countries</em> is not something that crosses your mind when you think of your country. <em>The unity under one government </em>is what the history of the United States of America (the independence) has taught American people to appreciate, nourish and value.
"Environment": The circumstances, objects, or conditions by which one is surrounded (Merriam Webster)
"-al" means pertaining to
so environmental means: Pertaining to the circumstances, objects or condition by which one is surrounded.
