What is the significance or importance of the Battle of Antietam?​

The battle ended the Confederate invasion of Maryland in 1862 and resulted in a Union victory. It also led to President Abraham Lincoln issuing the Preliminary Emancipation Proclamation on September 22, 1862.

Explanation:

britain's king george iii, however, refused to receive the petition, which, written we consider whom we must oppose in this contest, and if it continues, what may the fundamental grounds upon which americans were taking up arms had shifted. that king george refused to so much as receive the

basic principles: federalism, separation of powers, checks and balances, judicial review, representative democracy, limited government, rule of law, individual rights and responsibilities, consent of the governed, majority rule, popular sovereignty, equal protection.