If you are asking "why are legal terms in Latin?" it is because at one time all educated people were taught Latin and consequently, lawyers could understand these terms, just as doctors could understand the Latin anatomical terms. Now, we keep them in Latin because of tradition.
The language closest to Latin in terms of vocabulary and grammar structure is Italian.
The Romanian language is a Latin (Romanic) language.
latin
The original language of botany is Latin. Many botanical terms and scientific names of plants are derived from Latin.
Since western science and medicine originate from ancient Greece, many scientific and formal medical words are Greek. Many words in the English language are of Latin origin. There were two sources for this influence. One was the use of Latin by the educated elites and by the church. The other was the Norman invasion of England. The Normans were French and French became the language of the aristocracy. French is a Romance language; that is, a language derived from Latin. Many formal medical words and legal terms are Latin.
Italian is considered a descendant of Latin. Latin is the ancient language spoken by the Romans, which evolved over time to become the Italian language we know today. Italian shares many similarities with Latin in terms of vocabulary, grammar, and pronunciation.
The original language of geology is Greek. Greek and Latin is the language of all sciences. Greek lends itself well to the study of geology.
The language most similar to Latin is Italian. Italian shares many similarities with Latin in terms of grammar and vocabulary. Both languages have similar sentence structures, verb conjugations, and noun declensions. Additionally, many words in Italian have Latin roots, making it easier for speakers of Latin to understand and learn Italian.
The English language derives from a mix of Germanic languages and Latin. Latin has influenced English vocabulary through the Norman Conquest in 1066 and later through scientific and academic terms.
It is estimated that around 500 words entered the English language due to the Roman invasions, particularly through Latin influence. These words primarily relate to military, legal, architectural, and cultural terms.
The purpose of pleading is to make an emotional appeal to someone. Pleading in legal terms is a formal statement of the cause of an action.
The Anglo-Saxon and Latin languages are both members of the Indo European language family. However, they are separated by many years and miles, causing the languages to develop differently. Anglo-Saxon was a Germanic language from northern western Europe and Latin was the language of the Roman Empire, to the south and east around the Mediterranean Sea. Anglo Saxon was the basis for Old English, and many of our basic words derive from it. Latin words have been borrowed into the English language as scientific and legal terms. Latin based words abound in our current language, since the Norman French invaded England in 1066.