text: Robert Walker argued that failing to take this action would lead to an overflow of Northern insane asylums and British intervention.
full_question: Robert Walker argued that failing to take this action would lead to an overflow of Northern insane asylums and British intervention. Juan Almonte resigned his diplomatic post in indignation over this event. Isaac Van Zandt began discussing this plan with Abel Upshur before Upshur died. Anson Jones proposed this plan, which reduced his own power but reserved the weaker side the right to split into five parts in the future. Five years after it, a payment of 10 million dollars helped the area at issue repay debts. The Regulator-Moderator war was calmed just before this deal was struck. The question of whether the Nueces River became a southern border in this transaction led to war later in James K. Polk's presidency. For 10 points, name this deal that ended the independent Lone Star Republic.
first_sentence: Robert Walker argued that failing to take this action would lead to an overflow of Northern insane asylums and British intervention.
raw_answer: annexation of the Republic of Texas by the United States [or Annexation Treaty of 1845; accept any answer indicating that Texas is joining the United States of America as a state; do not accept any answer indicating the independence of Texas from Mexico]