If you feel that every citizen has the right to own a gun and you argue for this based upon the Constitution. You are most likely referring to the "right to bear arms" which is written in Amendment II of the Constitution or the Second Amendment.
Answer:
The federal court system has three main levels: district courts (the trial court), circuit courts which are the first level of appeal, and the Supreme Court of the United States, the final level of appeal in the federal system.
Explanation:
Between the Christian European states and the Islamic states of the Middle East and Africa. This has commonly been also known as the Crusades which started around the 10th century in the Middle east and have continued for a couple of centuries before losing their momentum.