The control of California, so important to President James Polk as internal trade, would be less costly with the control of California ports. Thus, option 1st is correct.
Annexation of Texas, a subject of debate in the United States as the gain of the land increased the conflict of slavery in the US. Thus, option 3rd is correct.
What is Slavery?
Slavery refers to the practice in which enslaves people are those who work for their owners and are the considered as the property of the owners.
They have performed all the task demanded by their owners. They have no freedom and suppose to work on the fields without being paid.
The ownership of California's ports would make it less expensive to maintain control of the state, which was crucial to President James Polk's internal trade.
Texas' annexation was a contentious issue in the US because the expansion of the slave trade led to further violence there.
Therefore, it can be concluded that option 1st and 3rd are correct for first and second part of the questions respectively.
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