Answer:Geographic featured that acted as norther borders of the Roman Empire at its height were: Rhine River, Danube River, Carpathian Mountains, and the Black Sea.
Answer:
A. Global Positioning System (GPS)
Explanation:
The Global Positioning System (GPS) is the most accurate way to find your exact location, virtually anywhere on the planet, thanks for a large network of satellites orbiting the planet and providing location information. That system is also complemented by the cellular towers if you're using a cell phone.
Aerial photography is great, but it will not tell you where you are.
Remote sensing is to gather information from a distance, not relevant to the question here.
The Geographic Information Systems are information systems to give information about the land matched with precise GPS information, used in mining for example, but it's not able to tell you where you are, it's to tell where a gold deposit is however.
Yes, countries are always making new alliances.
<span>National symbols of Canada are the symbols that are used in Canada and abroad to represent the country and its people. Prominently, the use of the maple leaf as a Canadian symbol dates back to the early 18th century, and is depicted on its current and previous flags, the penny, and on the coat of arms (or royal arms). Hope this will be useful im sorry if its not</span>
