I think it is scale
Scale is the ground distance over map distance
The monarchy and the autocracy both have a head. The head is one of the powerful group. As they continue as leaders they would become a stronger group altogether. So basically one leader of the two groups that controls everything and is the most powerful one.
Great rivers change course over the seasons and the years, making it difficult to determine which measurement comprises its accurate length. As the crow flies, it is about 2,400 miles from the Nile's source to its outlet (the meandering Amazon covers a mere 1,100 miles of straight-line distance)
Answer:
freedom of speech, religious tolerance, citizens rights, public education, promotion of free trade and commerce, cultural events and libraries, academies and so on
Explanation: