Why does the justinian code mention both civil law and the law of nations?​

Civil law, civilian law, or Roman law is a legal system originating in Europe, intellectualized within the framework of late Roman law, and whose most prevalent feature is that its core principles are codifiedinto a referable system which serves as the primary source of law. This can be contrasted with common law systems whose intellectual framework comes from judge-made decisional law which gives precedential authority to prior court decisions on the principle that it is unfair to treat similar facts differently on different occasions (doctrine of judicial precedent, or stare decisis).[1][2]

Historically, a civil law is the group of legal ideas and systems ultimately derived from the Codex Justinianus, but heavily overlaid by Napoleonic, Germanic, canonical, feudal, and local practices,[3] as well as doctrinal strains such as natural law, codification, and legal positivism.

Conceptually, civil law proceeds from abstractions, formulates general principles, and distinguishes substantive rules from procedural rules.[4] It holds case law to be secondary and subordinate to statutory law. When discussing civil law, one should keep in mind the conceptual difference between a statute and a codal article. The marked feature of civilian systems is that they use codes with brief text that tend to avoid factually specific scenarios.[5] Code articles deal in generalities and thus stand at odds with statutory schemes which are often very long and very detailed.

although world war i began in 1914, the united states did not join the war until 1917. the additional firepower, resources, and soldiers of the u.s. to tip the balance of the war in favor of the allies. remaining neutral. when war broke out in 1914, the united states had a policy of neutrality.

no statements but ok.

the statement that best describes the idea of manifest destiny that was used in the 19th century would be that "it was fate that the united states would continue to  expand westward," since people thought the us was "destined" to do so.