What kinds of changes have lobbyists for all the oil and mining industries brought about

they have lobbied for less restrictions on the mining and collection of mining and have also lobbied for less severe punishments when something like the BP oil spill happens  

Explanation:

Deregulation of their industry, regarding environmental and worker safety

Explanation:

The oil and mining industries are some of the most profitable industries in the country, and as such would want to secure their own interests above those of their workers. We have observed such events in cases like Bob Murray, whose time as CEO of Murray Energy saw sweeping effects that disadvantaged workers in favor of saving money at the cost of human lives, all while the workers, most of which were below the poverty line, had no option but to continue working in the mines.

c. it required that townships set aside land for public schools.

one of the main reasons was definitely slavery. back in 1861, republican abraham lincoln was elected and ended up being a major influence in the slavery business. slavery greatly affected the texas economy because back in 1845 during the annexation of texas, slaves became a big part of the texas population. many texans that were in favor of the secession influenced groups through party ties.