What did Lewis and Clark send to Jefferson and what items where included

animal skins, horns, skeletons, plant, soil and mineral specimens, and written reports.

Explanation:

On August 12, 1805 a large shipment of items sent by Lewis and Clark (from Fort Mandan in present-day North Dakota) arrived at the President's House in Washington. This shipment included natural history and Native American artifacts. There were animal skins, horns, skeletons, plant, soil and mineral specimens, and written reports.

d.prevent the spread of communism outside of eastern europe.

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)