B African American lacked opportunity in norther states
I would go back to the 1700's to experience Pacific Island of New Britain when it was discovered.
The best answer here is A, a huge conflict between the Mexican government and American settlers was slavery. Leading up to the Mexican American War
(1846-1848), the Mexican government started creating and enforcing more laws surrounding American settlers, as they were becoming very numerous. Even after the war, slavery was still an issue for settlers in Texas (which became independent after the war) and this contributed to the civil war. Hope this helps!
