A trade that involves more than one state, and that is, under the constitution, a proper subject of federal law
A writ of habeas corpus is used to bring a prisoner or other detainee (e.g. institutionalized mental patient) before the court to determine if the person's imprisonment or detention is lawful. A habeas petition proceeds as a civil action against the State agent (usually a warden) who holds the defendant in custody.
Answer:
Europeans could not navigate African rivers, which had many rapids, cataracts, and changing flows.
Answer:
The Nuclear Test Ban Treaty.
Explanation: This treaty was signed in 1963, as representatives of the United States, Soviet Union and Great Britain signed the Limited Nuclear Test Ban Treaty, which prohibited the testing of nuclear weapons in outer space, underwater or in the atmosphere.
When Constantine tried to establish New Rome he was witnessing a different change in Europe take place than what happened in prior centuries. With his divison of the Roman Empire in the Western and Eastern Roman Empire, he was able to succesfully save a whole part of the Empire.
Constantinople was therefore the new Roman capital. The Eastern Roman empire flourished for another thousand years, while the Western one declined in a few centuries.