What historical event directly led to the end of available frontier lands for settlement?

a) homestead act of 1862
b) 1849 gold rush
c) oklahoma land rush
d) railroad act of 1862

Interpretations of the concept that "all men are created equal" have changed since the declaration of independence was written. which historical development best illustrates this change. apex

Which of the following was the most important interest for a factory? design losses peoples moral hiring

Which of the following is one of franklin delano roosevelt's new deal programs?