A pneumothorax is that he got a collasped lung and that could be the case
It means that only one person rules a country or place at at time like Queen Elizebeth
Knowing about a murder and not telling anyone is withholding valuable information from the police and can come with a good couple of years
A cultural diffusion would be the situation in which one aspect of one culture is shared with other culture and spreads to this other culture.
Here the example of cultural diffusion is <span>women in North Africa wearing jeans and blazers - the cultural aspect that was borrowed was the western clothes. </span>