Go to Image> Trim, and choose "transparent pixels". It will crop out all the transparent parts. Otherwise you could try one of the other options if it has a.
To create a new background, select the Layers panel, choose New Filter Layer, and right-click Solid Color. Name your layer, and select a color from the palette.
Switzerland's weather in October is characterized by cool winds and occasional rain showers. The average temperature in Switzerland this month is 14°C during.