Respuesta :
The correct answer is "The Transcontinental railroad and free land in the west" .... Hope this helps!!
The Republican platform approved the protective tariff, opposed slavery, and other items like the transcontinental railroad and free land in the West. Thus, option (d) is correct.
What is slavery?
The practice of owning slaves is referred to as “slavery.” A person who is under the ownership and control of another instructions.
A transcontinental railroad was promoted by the Republican Party. Between 1863 and 1869, construction on the first transcontinental railroad began. It was referred to as the “Pacific Railroad,” and it was important to the growth of travel, business, and trade in the nation.
As a result, option (d) is correct.
Learn more about on slavery, here:
https://brainly.com/question/9331183
#SPJ2