Addington's domestic reforms doubled the efficiency of the income tax. In foreign affairs, he secured the Treaty of Amiens in 1802. While the treaty's terms were the bare minimum that that the British government could accept, Napoleon Bonaparte would not have agreed to any terms more favourable to the British, and the British government had reached a state of financial collapse from war expenditure, the loss of Continental markets for British goods and two successive failed harvests that had led to widespread famine and social unrest, rendering peace a necessity. By early 1803, Britain's financial and diplomatic positions had recovered sufficiently to allow Addington to declare war on France, when it became clear that the French would not allow a settlement for the defences of Malta that would have been secure enough to fend off a French invasion that appeared imminent.