Greek influences: Democracy, town meetings to discuss public affairs, make and pass laws
Roman influences: Republic, representative, senate, president
Here is the excerpt from A Rumor of War which best illustrates Vietnam's uncomfortable climate:
<span><em>The tedium was occasionally relieved by a large-scale search-and-destroy operation, but the exhilaration of riding the lead helicopter into a landing zone was usually followed by more of the same hot walking, with the mud sucking at our boots and the sun thudding against our helmets while an invisible enemy shot at us from distant tree lines.</em></span>
I believe the answer is Observations.
Mayan civilizations made architectural designs to use time and days.
I hope this helps!
The correct answer is C. All of theses.
More than 30 million year ago massive extensions of swamp waters and marshlands were formed in Oklahoma. As the years went by these swamp waters were buried beneath soil, sand and gravel however, these water deposits later provided the state with natural resources such as coal, petroleum and natural gas. Thus they are or were called swamp treasures due to their multiple uses and the richness they gave to the state.