All were government reforms pass during the Progressive Era, except. 17th Amendment which Allows state citizens to choose their U. S. Senators
rather than state lawmakers
22nd Amendment which limits an elected president to two terms in office, a
total of eight years.
Referendum that allows citizens to pass or reject proposed laws on election
days.
Recall allows local voters to remove politicians from office.

answer; i believe the correct answer is ( quakers);

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)