The Southern Colonies within British America consisted of the Province of Maryland, the Colony of Virginia, the Province of Carolina (in 1712 split into North and South Carolina) and the Province of Georgia.
They all used the same routes to travel the ocean
Most European countries were angered with the Monroe Doctrine the United States implemented especially the countries and empires part of the Holy Alliance after the Napoleonic war. But due to insufficient power and naval forces to implement the doctrine most countries disregard the threat.
Too much power in the state governments
I believe the answer is d, hunting