我是拓荒山人吉姆·布利杰的直系后人。

Now, I'm the direct descendant of the mountain man Jim Bridger.

同时，以英语为母语的殖民地开始沿着密西西比河支流去西部拓荒。

At the same time, English-speaking colonists were moving west to settle along the tributaries of the Mississippi.