Which of these was not a progressive political reform?
initiative
recall elections
lower taxes
referendum

I think the correct answer is Lower Taxes.

lower taxes

Explanation:

Progressive political reforms are often viewed as that because they gave more power to the people, and in a democracy the people should be who holds the power, in this case Initiatives, recalling elections and referendums were progresive political reforms because gave more power and more abilities to the citizens, lowering taxes weren´t a progressive political reform because it gave no power over the government offices to the citizens.

here are some major conflicts i found. maybe pick one and do more research on it. (cause i ain't writing 6 paragraphs)

in 1877, the nez perce war took place.

1881 - president james garfield was assassinated.

1882 - the chinese exclusion act was passed.

1883 - a decision in the civil rights cases legalized racial segregation in the united states.

1887 - the dawes act was passed.

1893 - the panic of 1893 took place. (what a creative name)

and there are probably other topics you can find if you just search up "united states timeline," or "conflicts in the 19th century for america."

then once you find a topic you like find out how it affected the people of america and what not. (sorry if this feels a bit short changed, history was and never will be one of my strong topics)