I believe it's B, if not the closest answer is D
How did the American Revolution affect other countries? Well, it had nothing to do with slavery--A is wrong. Yes, a foreign government tried to punish Patriot leaders--but it was only one, the British. B is wrong. The countries weren't really affected by the war on the other side of the globe, C is wrong.
But a lot of countries were inspired by our revolution...and so they made their own republican revolutions too! D is right!
Answer: Other republican groups fought to overthrow aristocratic governments.
The radioactive materials released by the accident had many immediate harmful effects on plants and on living things such as nature and animals within 20 to 30 km of the Chernobyl power plant at the time of the accident.
The invaders as seen in the battle of tours and Constantinople would unite Europe under the banner of Christianity, starting crusades to take the holy land later on.