Flying the American Flag upside-down is a sign of distress. For the best answers, search on this site https://shorturl.im/avkuS That America is defeated as a country to Mexico - the very extreme of what you see it as. It has become an unspoken symbol of our fight.
Objects can be easily resized to fit within any space constraints you may have within your document. Select the shape that you want to adjust. Click and drag a handle until the shape is the size you want. HINT: To maintain the shape's width-to-height ratio, hold down [Shift] while you drag the corner handle.
Highlight an object in the pane to select it in the slide. Hold down the Shift key to select multiple items. It's the same principle, but the selection pane eliminates the need to click or surround the actual objects. This route is easier when you have lots of objects, layered objects, or small objects.