It was the "steel" industry that benefited most from the Bessemer process. Process involved impurities that could be removed from steel more easily.
Answer:
33% of registered voters in 2019 declared themselves affiliated with the Democratic Party.
Explanation:
According to the Pew Research Center, in 2019 about 33% of registered voters in the US declared themselves Democrats. The survey was conducted with 12000 voters spread across all states of the country. In the same survey it was determined that 29% of registered voters identified themselves as Republicans, while 33% declared themselves independent and without affiliation to any party.
This type of research is important to understand the voting intentions in the country and which political ideologies remain the most popular.
The present-day Republican Party is descended from the "Whig Party", and formed mostly out of an opposition to slavery and its expansion. Although it should be noted the present day Republicans barely resemble the original Republicans.