It means it has both in it, not just one or the other
The least successful New England colony was Plymouth, because its harbor was not as good as Boston's and this made it not a very good trade center.
He felt that it could lead to a new age of transportation, and also gain more support for him if he had said he liked it
No, he did not achieve his peace without victory. It was to much of a burden on Germany and the League of Nations didn't include the United States of America.
A type of resume that emphasizes a candidate's skills and accomplishments while also including a complete job history is termed a "functional resume," since these are often used by people whose employment history may not match the career they are hoping to enter.