What techonology led to growth of the meatpacking industry in texas?

The refrigerated rail road car.

Railroads and commercial farming led to growth in Texas industry. The invention of the refrigerated railroad car allowed Texas beef to be shipped far away without spoiling.This, in turn, led to the development of major urban industrial centers in the state. 

the first 10 amendments to the u.s. constitution are known as the bill of rights. those 10 amendments establish the most basic freedoms for americans including the rights to worship how they want, speak how they want, and assembly and peaceably protest their government how they want. the amendments have also been subject to much interpretation since their adoption, particularly the right to carry a gun under the second amendment.

"a bill of rights is what the people are entitled to against every government on earth, general or particular, and what no just government should refuse, or rest on inference," said thomas jefferson, the author of the declaration of independence and the third president of the united states.