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.
The correct answer in this case would be militarism (b). The reason why this is the correct answer because a nation's tendency to expand its armed forces and acquire new and better weapons is also exactly that - militarism.
Other answers here wouldn't be correct because they have different meanings. The only thing that would come close is imperialism which has some similarities but is used in different contexts.
Answer:
Lincoln's inaugural address was stirring. He appealed for the preservation of the Union. To retain his support in the North without further alienating the South, he called for compromise. He promised he would not initiate force to maintain the Union or interfere with slavery in the states in which it already existed.
TBH Im going to guess this but i think its going to be <span>mobility</span>