Which event did president johnson use as a justification for escalating the war in vietnam?
the invasion of south vietnam by chinese troops
the claim of an attack on a u. s. warship by north vietnamese forces
the invasion of cambodia by north vietnam
the training of north vietnamese troops by chinese forces

The battle of sabine pass is important because? a) it was a stalemate between union and confederate armies. b) it resulted in the largest confederate casualty in the war. c) it marks the failed attempt of the union army to invade the confederate state of texas. d) it was won by the union soldiers and marked a turning point in the western front of the war.