Final answer:
The Magna Carta signed by King John in 1215 granted the English nobles the right to due process, including the principle of trial by jury, which has influenced the judicial systems in the West and democratic legal philosophies globally.
Step-by-step explanation:
When King John signed the Magna Carta in 1215, he conceded to several demands from his rebellious nobles. The most significant right that the English nobles gained was the principle of due process, which meant that "no free man shall be seized or imprisoned, or stripped of his rights or possessions, or outlawed or exiled, or deprived of his standing in any way, nor will we proceed with force against him, or send others to do so, except by the lawful judgment of his equals." This essential clause established the groundwork for the legal concept of trial by jury, which has become a fundamental aspect of modern judicial systems in Western societies. This principle of due process, as articulated in the Magna Carta, not only safeguarded nobles but later extended its influence, contributing to the legal philosophies that underpin many democratic societies today, including provisions in the U.S. Constitution.