What surveying tool did the Romans use to line up points in their road building?

A. Groma
B. Psychrometer
C. Compass

The Roman Groma: the Roman Surveyor's Workhorse

For road building and laying out settlements in the distinctive grid patters, the main tool of agrimensores was a device known as the groma, believed to have had its origins in Egypt

The correct answer is

A. Groma.

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)