I believe the answer would be C, burning fossil fuels. Oil and gas is made up of the remains of microscopic plankton. Over millions of years the remains become the carbon-rich coal, oil and gas we can use as fuel. When fossil fuels are burned they release carbon dioxide into the atmosphere, thus contributes to global warming.
Now I'm not 100% sure here but C is your best bet
Answer:
Social inequality intensified coz of emergence of new classes in the society that was formaly at one level of co-existence.
Explanation:
It led to immigrations.
Lose of properties by immigrants .
Increase economic base for the society.
Increased and improoved healthcare.
(A) He may have acted alone, although Austria-Hungary thought he was helped along by the Serbian government. ... (C) He was probably assisted by the Serbian government, which hoped that his actions would spark a world war and help Serbia gain independence.
