The main reason why Alexander continued his campaign of conquest after this goal had been achieved was because the surrounding areas were easily-conquerable, and doing so was advantageous economically.
Answer:
It encouraged people to use reason to solve problems.
Explanation:
I Believe that would be the opium war?
The adjective in this sentence would be modifying the noun "arch" since the adjective (tall) is making the reader better understand certain characteristics of the arch.