<span>The term a priori, meaning from the earlier, comes from Immanuel Kant. This concept is most commonly used in philosophy and is popularized by Kant's publication Critique of Pure Reason. Most people use a priori in conjunction with the idea of knowledge (e.g. a priori knowledge).</span>
<span>In several ways. It changed military tactics. First, it killed whatever was left of chivalry as anyone one using a gun could kill a knight in armor (in the mid-middle ages knights were allowed to fight each other, but not a peasant and a
Pikemen, more specifically, Swiss mercenaries using the famed halberd only shined at the end of the middle ages, at a time where guns were already in Europe.</span>
Judaism, Christianity, and Islam all believe in god and jesus christ. In Islam they can't eat certain meats where in Judaism and Christianity you can eat all meats. Christians, Islams, and Judaists all celebrate different holidays. Christianity has several religions created from it like Catholic. All religions have meeting places.