Translation of propiciar

Last weekend some friends of mine and I took a trip to the North-West of Massachussets to see the leaves which have changed their colors. All over the world people talk about the autumn in Boston.
The trip included a lot of walking and the guide told us the history of this region, of the Chiapas state and also how it evolved in the context of the entire Mexican country. Very interesting!!!
I got up at five in the early morning because I wanted to take pictures of the sunrise. I hoped that there would be some fog, as it would add to the atmosphere and would results in great shots.