World War I was the reason why Germany did not win the United States over to the Allies. It is said that Germany has made a lot of efforts to win over the United States.

Economically, since the end of 19, the contradiction between Germany and Germany has gradually increased. Germany is the main rival of American expansion in Latin America. By 19 14, the US investment in Latin America is1700 million US dollars, and Germany is 900 million US dollars.

Secondly, after the outbreak of World War I, the United States declared "neutrality" and did business with the warring parties. Due to the strict sea blockade imposed by Britain on Germany, the trade between the United States and its allies increased from $824 million in 19 14 to $32140,000 in16, while the trade with its allies increased from19/kloc. In this way, the United States and its allies have been closely linked in economic interests. If the Allies are defeated, the American creditor's rights will be worthless.

Emotionally, Germans immigrated to the United States late, mostly in the middle and lower classes, and had little political discourse power. At that time, most of the upper classes in the United States were descendants of British immigrants. In contrast, the United States naturally tends to be an ally.

Third, militarily speaking. Germany is in a situation of fighting on two fronts and is unable to break the deadlock. And blocked by Britain, the war potential began to dry up, and failure was inevitable. The United States will naturally not bet on Germany.