The Romans would develop road systems as they went along with their expansion. Every time they'd conquest new territory, they'd make sure to keep the new colonies controlled by facilitating access to them through the construction of new roads. In addition, the development of these routes was crucial to containing attacks and ensuring a successful defense of the Empire, as the armies would move move faster and arrive quickly to the territories in conflict.
This strategic emphasis in roads and bridges was vital to the success of their army. The routes were built specifically with speed of movement in mind, designing them mostly in straight lines for efficiency.
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The answer is b
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Answer:
By the mid-1600s, less than half a century after the English had opened the way for full-scale European settlement, serious crises were brewing in the American colonies. At first tensions were caused by a steadily increasing population: massive numbers of settlers required more land, additional dwellings and other accommodations, greater food supplies, and expanded trade and transportation networks. The immediate victims were Native Americans, who suffered mistreatment at the hands of colonists scrambling to grab land and natural resources. A demand for more laborers also created the institution of slavery, as millions of Africans were transported into the colonies during the seventeenth and eighteenth centuries. Among the colonists themselves, religious differences were escalating into confrontations, land squabbles were causing rebellions, and class divisions were breeding unrest.
Explanation:
Photosynthetic prokaryotes caused aerobic atmosphere during the history of Earth.