According to the acticle, why did the u. s wait some tine before entering world war 1

In 1917, Germany, determined to win its war of attrition against the Allies, announced the resumption of unrestricted warfare in war-zone waters. Three days later, the United States broke diplomatic relations with Germany, and just hours after that theAmerican liner Housatonic was sunk by a German U-boat.

Each mans success depends on his own hard work

I'm taking that test i will let you know!