The answer is C, coincidentally. A wouldn't be correct because similarly is when the other group agrees. Here, two groups are disagreeing. B would fit but it would not be the most logically connected word. C means when one group agrees on something but the other group disagrees more with the decision. D would fit but it would not because there is no direct contrast. Some teachers believe that school should start later in the year and parents believe that school starts earlier in the year. Therefore it can be concluded that C is the best-fit word to be placed in the blank.
The reason why it takes a long time to ratify the Articles of Confederation is that U.S. just declared independent from Britain, in other words, they just passed the Declaration of Independence, and in order to keep a country on track, they need some sorts of form of government, and they don't want to repeating the history, or have another tyrant, or a king, to rule over them again, which is a part of reason why they declared independent (the actual reasons is the king taxes us for no reason and we can't participate in the government), so they need all of the 13 states to approve, or sign, the Articles of Confederation, majority of them signed it, some of them having issues about the rights in the Articles of Confederation, so someone, I forgot his name, promised to includes all of the rights into the Articles of Confederation, which they can't do it instantly, which later known as the Bill of Rights (the first 10 amendments), so it takes longer to get the whole Articles of Confederation to be approved, or ratified.
Hope this help, my English is not that well so please excuse for it.
Islam spread into Europe in 1543
In a free market, supply and demand determine the number of goods produced: the more needed, the more is produced, and the type of goods produced: only the goods that are needed are produced.
I hope this helps!
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Don't take my word, but it could have been because they were closer to Austria