Answer:
Grasp is the best synonym for clenched
There were actually four HUGE causes for WW1, treaties and alliances brought many countries into war, the imperialism of some countries scared other countries, and they were "defending" themselves, there was a lot of weapons stocking, and countries were creating gigantic armies, and that threatened other countries, and then we have plain old nationalism.
The reason why the Mongols withdrew form Asia was because of horrible weather conditions and diseases. If I had to pick, I would pick A.) Diseases because A is more severe then the weather conditions.
The correct answer to this open question is the following.
Unfortunately, you did not include options to answer the question.
However, we can answer it based on our knowledge of the subject.
The arrival in Texas of the industries of munitions, shipbuilding, and petroleum was the direct result of the war.
Yes, industrialization and the fabrication of ships, supplies for the war, and the development of the oil industry was a direct result of the United States entering World War I.
With the United States entering the war, the troops at the war front needed all kinds of war supplies. Oil played a key role as an important raw material in the industries, as well as steel for shipbuilding. Industries had to work hard to comply with the war demanding and the US army necessities in Europe.