Answer:
The expansion of the railroads in the late 1800s was instrumental in helping the US economy boom. It did this in two ways. First, the railroads created a tremendous amount of demand for goods and labor on their own. As the railroads were being built, they needed huge numbers of people to build them.
It was for immigration mainly in late 1800's and early 1900's
2. accepting responsibility for the assassination
5. suppressing anti-Austrian groups and publications
According to the terms of the ultimatum delivered on July 23, the Serbian government would have to accept an Austro-Hungarian inquiry into the assassination, notwithstanding its claim that it was already conducting its own internal investigation. Serbia was also to suppress all anti-Austrian propaganda and to take steps to root out and eliminate terrorist organizations within its borders—one such organization, the Black Hand, was believed to have aided and abetted the archduke’s killer, Gavrilo Princip, and his cohorts, providing weapons and safe passage from Belgrade to Sarajevo. The Dual Monarchy demanded an answer to the note within 48 hours—by that time, however, anticipating Serbian defiance, Gieslingen had already packed his bags and prepared to leave the embassy.
It was approximately 200 years ago that the ocean became important area of study
