<span> Geographic expansion exposed latent tensions over the morality of slavery and the balance of economic power. It was during the Era of Good Feelings that the political issues arose that would dominate American politics for the next 40 years.</span>
Turkish Jonturkler, coalition of various reform groups that led revolutionary movement against the authorial regime of Ottoman sultan Abdulhamid II, which culminated in the establishment of a constitution government.
I would say either A or D, hope I helped, sorry if I didn't!!!
A. Dayton Peace Accord ended the fighting in Balkans in, or around, 1995