_T._--Let me explain about that. In 1854, a treaty had been made between Canada and the United States, called the Reciprocity Treaty, by which the two countries exchanged their goods freely. This treaty was ended in 1866, and the people of Canada had to depend more on themselves. Besides, there was a good deal of trouble between Britain and the United States, arising out of the Civil War in the latter country, which had just ended. (The pupils are told here about the "Trent" and "Alabama" affairs, and the Fenian raids of 1866.) The people at that time were afraid that there might be war between the two countries and, of course, that would bring Canada into the trouble. Do you see now why a railway was needed from Quebec to Halifax? _P._--Because there was danger of war, and because the United States might interfere with Canadian trade. _T._--There were both military and commercial reasons. We have found now why the road was to run from Halifax to Quebec, and why it had to be built at that time. The next thing to find out is--Where it was to be built. If you were a railway contractor and had to build the road without thinking of anything but getting it done, what route would you be likely to follow? _P._--I think I should take the shortest way. _T._--Where would the road go then? (Have a pupil place a ruler on the map from Quebec to Halifax.) Tell where it would run. _P._--Through Quebec Province, the State of Maine, New Brunswick, and Nova Scotia. _T._--Would the people build it along that line? Don't forget the reasons for building it at all. _P._--They wouldn't go through the State of Maine, because that is in the United States. _T._--What is the next way they might think of? _P._--The next shortest way so as to keep in Canada. _T._--Where would that be? (Pupil comes up and tells from the map.) _P._--From Quebec city through Quebec, along the edge of Maine, into New Brunswick and Nova Scotia. _T._--Would they take that way? _P._--No, because it is too near the border of the United States. _T._--Why do you say "too near"? _P._--If there was war, soldiers from the United States might come over and wreck the railway. They might dynamite the bridges or tear up the rails. _T._--As a matter of fact, they did not take that way. What route could be taken to prevent any trouble of that kind? _P._--They would stay as far from the border as possible. _T._--Where would that be? (Pupil comes to the map to find out.) _P._--They would have to follow the St. Lawrence for some distance. _T._--How far? _P._--Right down to the other side of New Brunswick. Then down to Halifax. _T._--Would that be the cheapest line to build?