The correct answer to this open question is the following.
Although the question does not provide references to the lessons or the activities, we can say that two important sentences that are part of any lesson regarding World War I could be the following.
1.- The assassination of Archduke Franz Ferdinand and his wife Sophie during a visit to Serbia, was one of the main reasons that started World War I.
2.- After the sinking of the Lusitania ship and the interception of the Zimmerman telegram in which the Nazis asked Mexico for support in the war, President Wilson decided to ask Congress for a declaration of war against Germany.
To prevent damage to the outboard boat that is going to be towed, it is a priority and what should always do is to raise the engine. Raising the engine could prevent damage and it is also essential to secure it. So that it wouldn't be exposed and to prevent it from being harm or damage, leading to serious mechanical issues.
