The correct answer is D. Powers not expressly given to the federal government belonged to the states.
The Democratic-Republican party was based on the ideas of several different individuals including Thomas Jefferson and James Madison. These men were in favor of a small central (aka federal) government. This shows that answer choices one and two are incorrect.
Along with this, the Democratic-Republicans believed that the state governments should have a significant amount of power. This is why these individuals believed that any power not given to the federal government should belong to the states.
I wonder whether there would be also other options, but one very important aspect is the smog: the city center is where many industry-relevant things meet: the factories are all around it, transport, cars... and since it is surrounded by bad air, the air takes longer to dissipate. This is especially visible if the city is in a valley, such as Mexico city foe example.
So they can spin the narrative that suits them in particular.
Answer:
The Paris Peace Accords, officially titled the Agreement on Ending the War and Restoring Peace in Viet Nam was a peace treaty signed on January 27, 1973, to establish peace in Vietnam and end the Vietnam War.
