Answer:
Rail communication between Texas and the rest of the United States was insufficient during most of the 18th century. Texan ranchers needed to take their livestock to a place where it could be distributed and sold to the rest of the country.
The best place was Saint Louis, Missouri, because the city became the port of entry to the American West, and connected the West with the East with rail lines.
Texan ranchers therefore hired cowboys to transport the cattle from Texas to Missouri in a long, dangerous journey. The cattle could get stolen in the way, or it could become stray. Thus, the job of the cowboy was a very difficult and important one.
Answer:
Railroads
Explanation:
Immigrants from China worked mostly as agriculture laborers on railroad construction.
The height of the cube is 9 cm, Which is mentioned in option D, if the volume of cube is 729 cubic centimeters.
Explanation:
The given is,
Volume, V = 729 Cubic centimeters
Step:1
Formula for volume of cube,
...............................(1)
Where, a - Side of cube
From the given value, Volume, V = 729 Cubic centimeters
Equation (1) becomes,

Take cube root on both sides, the above equation becomes
![a=\sqrt[3]{729}](https://tex.z-dn.net/?f=a%3D%5Csqrt%5B3%5D%7B729%7D)

a = 9 cm
Height of cube, a = 9 centimeters
Result:
The height of the cube is 9 cm, Which is mentioned in option D, if the volume of cube is 729 cubic centimeters.