If I am going to write Journal Four, whose title is "The Crusades and Growth of Cities," which of the following sentences should I use as my topic sentence?
The First Crusade started for many reasons.
People of my village had a variety of reasons to go and fight during the First Crusade.
Jerusalem was _______________.
When I returned to my village my life changed/ stayed the same.
My village changed after the Crusades in many ways.
Of the choices that you have given us here, the last sentence would be the best one to use as a topic sentence for this journal. The first three choices do not have anything to do with changes to cities. The fourth one might be somewhat related but it does not focus on changes to the village or city. The last one is the best choice.
The first two choices are about the causes of the Crusades. The first is about the reasons why leaders called the Crusades while the second is about the reasons why individuals decided to participate in those Crusades. This has nothing to do with the changes that happened to cities after the Crusades. The third choice asks you to describe Jerusalem in some way. While Jerusalem is a city, there is nothing here to indicate that you are going to talk about how it changed.
The fourth choice is better than the first three. This one at least talks about how things after the Crusades were different than things before the Crusades. The problem is that the fourth choice does not talk about how cities were different. Instead, it talks about how “your” life changed. By contrast, the fifth choice talks about the changes in “your village.” We can assume that you will go on to describe how your village changed and grew. Perhaps your village became a city in the years after the Crusades. This topic sentence would be most appropriate for the title of your journal.