Blasting tunnels through mountains Building bridges across rivers
• Leveling hills and filling in hollows
.
These environmental modifications were made in order to construct
F permanent housing for immigrants in urban areas
G canals that linked the Midwest to the Northeast
H
a transcontinental railroad
J
a harbor on the Mississippi River

answer: c

explanation:

its just the right answer

the triple alliance. germany and austria-hungary were already allies by 1879 when, worried about a threat from russia, they formed the dual alliance. italy joined the group in 1882. there was a concern about a possible attack from france and the alliance needed powerful friends to defend it.

an interest group is an organization whose members share common concerns, and try to influence government policies that impact those concerns. elected officials frequently complain about the influence of "special interests" on american politics.

it was the first major victory for the colonists.