Final answer:
The Second Reform Bill in Britain was opposed by the Tory Party, mainly consisting of nobles and landowners, as they saw it as a threat to their power and influence in Parliament.
Step-by-step explanation:
The opposition to the Second Reform Bill in Britain was mainly led by the Tory Party, which was comprised of nobles, land owners, and others whose income came from agriculture. They opposed the bill because it threatened their power and influence in Parliament. The bill aimed to expand the electorate and give more representation to the urban middle class, which the traditional elites feared would diminish their control.