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.
If these are the options:
<span>- They followed the Mississippi from its source to its mouth.
- They claimed large stretches of land in the southern U.S.
- They claimed the St. Lawrence River.
- Spain gained great wealth.
The answer would be SPAIN GAINED GREAT WEALTH.
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