introduction about /the Westward Movement/

[symaa]

hello,
What do you think about this introduction about/the Westward Movement/

To understand the history of USA, we cannot rely on one single fact such as: the mixes of races, the diversified economy and the highly accelerated industrialization, but among these events was the westward movement which is considered as an important historical phenomenon.

Regards

[symaa]

Gil

Thank my teacher you for your correction.
All the best.