Final answer:
King Louis XVI tried to escape to Austria to seek support in restoring his absolute monarchy.
Step-by-step explanation:
King Louis XVI tried to escape to Austria because he was dissatisfied with the Constitution of 1791, which reduced his power to a constitutional monarchy. He hoped that by escaping to Austria, he would receive support from émigrés, nobles who had left France, and other nations like Prussia and Austria to restore his absolute monarchy. However, he was recognized in Varennes and brought back to France, where he remained under house arrest.