Which of the following is most likely to mark the boundary between two continents?
A river
A group of hills
A lake or a ocean

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

c or d. good luck !

i'm gonna go with d.

hope this !