All of the following were effects of the first battle of bull run {manassas} EXEPT ? the north gained much confidence immediately after the battle

At a trade meeting, country a and country b, which are trade partners, agree to remove trade barriers to stimulate economic growth. they sign agreement stating that tariffs on all goods will be removed. some groups in country b protest the agreement because they think it will lead to excessive in some industries, which will threaten companies and jobs.