Answer:
1) The great map covered the areas in which there was land but it wasn't divided yet into states and such
2) This was important because if you are traveling, you must have a map or something to navigate with.
Explanation:
The major physical feature that you would have to cross in order to reach this destination would be the Appalachian Mountains, since these were so large that they discouraged travel to this region for quite some time. <span />
The Calender is based on the farming seasons, however, the Egyptians noticed that they need a few more days to fit the seasons, So the calendar is important Egyptian achievement because they added five days, holidays to thank gods, and they invented 365-day calendar.
The golden age of radio began in the early 1920s and lasted until the 1970s. Hope this helps
