(a) The Chesapeake-Leopard affair, where the British warship HMS Leopard attacked the American USS Chesapeake in 1807, inflamed American public opinion and was used by war hawks to argue for the need to defend American national honor and sovereignty.
(b) The economic repercussions of the Embargo Act of 1807, which harmed American merchants and caused widespread unemployment, were highlighted by opponents of the war to argue that conflict with Britain would further damage American trade and livelihoods.
(c) The sense of national unity and identity bolstered by the War of 1812 helped to fuel a period known as the Era of Good Feelings, leading to a decline in the Federalist Party, which had opposed the war, and influencing the U.S. to focus more on internal development and westward expansion.
Make your answers two very short sentences
(a) The Chesapeake-Leopard clash heightened calls for defending U.S. honor. It fueled pro-war sentiment among Americans.
(b) The Embargo Act's fallout hurt U.S. trade, sparking anti-war views. Critics warned war would worsen economic woes.
(c) Victory in the War of 1812 sparked national pride and unity. The Federalists waned as America turned inwards and expanded westward.