Which of the following innovations helped ranchers establish boundaries around their lands? A.
the introduction of more railroads
B.
the use of Herefords
C.
the spread of barbed wire
D.
the beginning of Wild West shows

C. The spread of barbed wires.

Explanation: I'm amusing the sentence "establish boundaries around their lands," this will mean barbed wires helped establish boundaries around their lands. This is one of the reaching innovations.

Hope this helped. :)

a direct vote in which an entire electorate is invited to vote on a particular proposal. this may result in the adoption of a new law.  

barrio is a spanish word meaning neighborhood. in spain, several latin american countries and the philippines, the term is also used officially to denote a division of a municipality while a ghetto is a part of a city in which members of a minority group live, typically as a result of social, legal, or economic pressure. the term may have originally been used in venice to describe the part of the city to which jews were restricted and segregated.