The total number of victims is estimated at about 22,000. The victims were
executed in the Katyn forest in Russia, the Kalinin and Kharkiv prisons, and
elsewhere. Of the total killed, about 8,000 were officers taken prisoner during
the 1939 Soviet invasion of Poland, another 6,000 were police officers, and
the rest were arrested Polish Intellegentsia who the Soviets considered to be
"intelligence agents, gendarmes, landowners, saboteurs, factory owners, lawyers,
officials and priests"
Answer:
I believe it's two, gunpowder and crossbow
Explanation:
The soonest realized crossbows were designed in the main thousand years BC, not later than the seventh century BC in old China, not later than the fourth century BC in Greece (as the gastraphetes).
Gunpowder was developed in China at some point during the main thousand years AD. The most punctual conceivable reference to gunpowder showed up in 142 AD during the Eastern Han administration when the chemist Wei Boyang, otherwise called the "father of speculative chemistry", expounded on a substance with black powder like properties.
The Underground Railroad was the name of the escape routes used by slaves to escape the South and flee to the North. It was a network of special routes and safe houses that were used by both slaves and abolitionists who were sympathetic to their cause of escaping slavery. It started in the late 1700's and ended after the abolition of slavery. Canada was a popular destination, as slavery was prohibited their and had a longer border for easier access.
The answer is A. the sinking of the Lusitania
