It was D. <span>Baron Friedrich von Steuben
He was a former </span><span>Prussian officer.</span>
The main issue that caused concern between the federal and state governments in the 1800s was Control over slavery.
<h3>Why was this the main issue?</h3>
In the 1800s, the issue of slavery was very contentious with the federal government being controlled at different times by pro and anti slavery politicians.
They therefore came into conflict with states on the issue of slavery with this eventually culminating into civil war.
In conclusion, option C is correct.
Find out more on federal v. state issues at brainly.com/question/5496965.
<span>The Romans defeated the Etruscans, Samnites and several Greek cities to take control of the peninsula.
Please put me as brainlest of its right.</span>
The Apollo-Soyuz Test Project was a joint United States-U.S.S.R. venture to live and work together on a space platform in orbit.
