Six States Were Created from the Western Territories in the Years

Six states were created from the western territories in the years 1889-1890. These states were NOT admitted before 1889 because

A) Democrats in Congress were reluctant to create states out of territories that were heavily Republican.
B) the lawlessness of many western towns discouraged Congress from admitting the territories as states.
C) states such as Oklahoma and Arizona that were first admitted a century earlier had proven unsuccessful investments.
D) if large mining firms had been forced to pay state taxes, they would have had to close down for good.
E) the cattle ranchers lobbied for continued open range as regulated by the territorial legislatures.