To a great extent refers to a considerable or significant degree or magnitude of something. It indicates that something has happened, is true, or exists on a large scale or to a substantial extent. It is an expression used to emphasize the extent or magnitude of an action, event, phenomenon, or characteristic.

When a situation is described as occurring to a great extent, it means that it happens quite frequently, widely, or pervasively. It suggests that something has had a profound impact or influence, affecting a substantial number of people, places, or things. For example, one might assert that the economic crisis affected job opportunities to a great extent, indicating that it had a substantial impact on employment across various sectors or regions.

Similarly, the phrase can be used to describe an individual's characteristics or abilities. If someone is described as being talented to a great extent, it means that they possess exceptional aptitude or skills in a particular area. This implies that their abilities surpass the average level and are highly developed or advanced.

In summary, when something occurs or is true to a great extent, it means that it is significant, widespread, or highly impactful. The phrase emphasizes the large-scale nature of an action, event, or trait, indicating that it goes beyond the norm or is substantial in its magnitude.