Mexico has been involved in numerous different military conflicts over the years, with most being civil/internal wars.
Granger laws were declared as an unconstitutional because they tried to have control over the interstate commerce, which was the federal government's responsibility by Gibbons v. Ogden. Granger Laws were laws that were passed in multiple midwestern states in US. These states include Iowa, Minnesota, Illinois, and Wisconsin.
Answer: The stong nationalism of the Serbians.
Explanation: The Serbians were against plans of Austria-Hungary to colonize their land.
The brain. Modern homo sapiens such as humans have much larger brain than the early homo sapiens due to the fact that food at the time was becoming scarce so the need for the homo sapiens to become smarter was a necessity. And because of this early homisapiens brains evolved to become much larger than what they were before