 Complete the following phrase:  With no path now for a quick resolution to the conflict in the north, Polk authorized an invasion of central Mexico to take the capital and force Mexico to the negotiating table, redirecting the bulk of General Zachary Taylors troops to General Winfield Scotts army. Santa Anna mobilized troops and artillery and rapidly marched north. Santa Annas forces outnumbered Taylors, but his troops were exhausted, ill-clothed, hungry, and equipped with inferior weapons when the two armies met at La Angostura in the Battle of Buena Vista on 2223 February 1847. Hard fighting over two days brought an inconclusive result, with Santa Anna withdrawing from the field of battle overnight just as complete victory was at hand, taking war trophies such as cannons and battle flags as evidence of his victory. With Scotts army landing at Veracruz, Santa Annas home ground, he rapidly moved southward to engage with the invaders and protect the capital. For the Mexicans it would have been better if Scott could have been prevented from leaving the Gulf Coast, but they could not prevent Scotts march on Xalapa. Santa Anna 