So they can govern themselves and do what the people want.
American isolationist sentiment actually began immediately following the Revolutionary War and then increased drastically after WWI, when many American troops died for a war overseas.
In 1856 Franco-Russian-British peace was signed at the Congress of Paris. Cavour succeeded in having one of the sessions expressly devoted to discussing the "Italian problem": He was able to publicly defend the idea that the repression of the reactionary governments and the The policies of the Austro-Hungarian Empire were the real culprits of the revolutionary anxieties that were forming throughout the peninsula and, above all, that these revolts in Italy could degenerate into a revolutionary threat to all the governments of Europe, thereby increasing the Franco-British concern in the "Italian problem".
Answer:
They needed money
Explanation:
If they could get money from other countries, they'd have more money to circulate in their own economy
