Why did Northern political parties oppose the spread of slavery?(1 point)Responsesfor moral reasons AND to protect the benefits of white workersfor moral reasons AND to protect the benefits of white workersfor moral reasons ONLYfor moral reasons ONLYONLY to protect the benefits of white workers

The correct answer is: for moral reasons AND to protect the benefits of white workers. Northern political parties opposed the spread of slavery due to their moral objection to the institution and also to protect the economic opportunities and benefits of white workers.