What caused the united states to break its neutrality and enter world war i

the constant German sinking of trading vessels resulting in the loss of lives. Germans were intent on keeping their submarine policy that no trading can occur next to it, so the Americans decided to interfere.

The sinking of the lusitania and killing of americans by the constant German sinking of trading vessels in an effert  to stop americans from resupplying the allies.

i do believe its (d) it allowed the government to offer pioneers sixty acres of western land if they lived on it and made improvements to it.

explanation: signed into law in may 1862, the homestead act opened up settlement in the western united states, allowing any american, including freed slaves, to put in a claim for up to 160 free acres of federal land. by the end of the civil war, 15,000 homestead claims had been established, and more followed in the postwar years