Question

volunteers who had much less training than the professional soldiers.
soldiers who volunteered for the u.s. military had lots of different reasons for joining. match the parts of the statements describing why americans volunteered to fight in mexico.
... so i need to volunteer in order to carry on a family tradition.
... so i should fight to take the territory from them.
... so i should volunteer in order to defend the country’s borders.
mexico attacked american soldiers on land the united states rightfully owned...
people in mexico dont deserve to own places like california...
i havent had the chance to fight in a major war like my father and grandfather did...

Explanation:

1. For the claim that Mexico attacked U.S. soldiers on land the U.S. claimed, the matching reason is defending the nation's borders.
2. For the view that Mexico does not deserve territory like California, the matching reason is taking that territory from them.
3. For wanting to follow the family tradition of fighting in major wars, the matching reason is continuing the family military tradition.

Answer:

1. Mexico attacked American soldiers on land the United States rightfully owned . . . → . . . so I should volunteer in order to defend the country's borders.
2. People in Mexico don't deserve to own places like California . . . → . . . so I should fight to take the territory from them.
3. I haven't had the chance to fight in a major war like my father and grandfather did . . . → . . . so I need to volunteer in order to carry on a family tradition.