Short answers, pulled from the story.
General Dwight Eisenhower prioritized destroying German forces retreating toward the Rhine over liberating Paris. The Allied strategy aimed to end World War II in Europe and concentrate efforts on the Pacific Front instead.
Henri Rol-Tanguy led the French Forces of Interior that staged an uprising against the German garrison upon the approach of the US Third Army under General George S. Patton. This resistance movement included police, Republican Guard, and gendarmerie joining the struggle.
Colonel Dietrich von Choltitz surrendered at 3:30 p.m. on the 25th of August 1944 at the Hôtel Meurice. He disobeyed Adolf Hitler's orders to inflict maximum damage on the city despite repeated commands to destroy it completely.
One hundred forty-six men from the 9th Company of the Régiment de marche du Tchad were Spanish Republicans under Captain Raymond Dronne. These soldiers broke into central Paris through the Porte d'Italie and fired the first rounds at a large group of German fusiliers and machine guns.
Civil Affairs of SHAEF authorized the import of up to 2,400 tons of food per day at the expense of military effort. A British convoy labeled Vivres Pour Paris entered on the 29th of August while US supplies flown in via Orléans Airport delivered five hundred tons daily alongside another 500 tons from American sources.