I believe it’s B, I’d choose B if I were you.
.parents sold their children, men their wives, and one brother the other and prisoners of war. So D, <em>purchasing children as slavees from their parents.</em>
A. Better machinery as industrial revolution took course between 1820- 1840
Answer:
When Austria-Hungary declared war on Serbia, it led to Russia declaring war on Austria-Hungary as well because Russia was in an alliance with Serbia.
Germany which had an alliance with Austria-Hungary via the Triple Alliance then declared war on Russia.
Russia was already in an alliance with Great Britain and France known as the Triple Entente and when Germany declared war on Russia, Great Britain and France declared war on Germany.
Thus began the Great War.
