Which contribution of the ancient Romans was MOST significant to the Roman military?

From which two ancient civilizations did the United States get the idea of civic participation?

Which of the following statements best describes how the Greeks and Romans influenced civic participation of today in the United States?

What was the ​MOST important similarity between the development of early river civilizations and Meso-American civilizations?

"In Mesoamerica, located in modern Mexico and Central America, early civilizations did not form around large rivers like in Afro-Eurasia. The Olmec developed in what is now called Mexico. The development of this civilization was very different from the Afro-Eurasia river civilizations. They relied on fishing and growing Maize in moist areas, as did the Chavin culture, but they also were very active in trading their products for many raw materials for artisans. Based on this trading, they were able to develop institutions and writing, thus making them an actual civilization. Like China, they adapted to their environmental isolation by developing a local trade network." Early Meso-American and Chinese civilizations experienced environmental isolation, but were able to adapt. What evidence from the text supports this claim?

What does this table indicate about the Roman Empire between 235 and 249 AD/CE?

How did the Romans influence the government of today?