Based on this statement, historical sources often contain "(2) facts that are completely balanced and <span>reliable" since they aren't thinking forward. </span>
I believe the answer would be A. Bay of Bengal. But not completely sure.
Answer:
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In US during the 1800s there was urbanisation taking place in the cities and with the increasing urbanisation and industrialisation many great job opportunities increased in the cities.
Immigration took place, people migrated from different regions in search of jobs and they were given many fruitful jobs in the cities. Due to the increase in labour many new industries opened up and new job opportunities were created. With the increase in urbanisation, industrialisation increased, which increased jobs and democracy in US.