The answer is B; West germany had one of the world’s strongest economies from the late 1950s onward
We will follow this strategy: we will find the value of x using a theorem about the sum of interior angles of any polygon, and then we will compute 2x to find A.
The theorem states that the sum of the interior angles of <em>any</em> polygon with 
sides is 
Your polygon has seven sides (so 
), and the sum of the interior angles is
So, using the theorem, we know that
.
Since 
and 
, we have 
Answer:
B) advancements in farming
Explanation:
the only tribes that did not have permanent settlements were the ones who chased their food. like the blackfoot tribe. because of this since food sources like buffalo were always on the move, they couldn't stay in one place. however with the advancements made in farming, they were able to stay in one place usually close to a river and grow their food while only hunting nearby wild life.
