However, the war's main impact proved to be social and political.

Indeed, the main impact may very well be a symbolic one.

The new law's main impact has been to send businesses scurrying to lawyers.

The main impact of the war was the influx of people.

The courses' main impact, she said, "may be to reinforce the idea that people are watching them."

The main impact that day was a major hailstorm across much of Iowa.

But the main impact has been on readers, who, as it turns out, buy more books when they are cheaper.

The main impact for other companies could come in the fourth quarter.

Success's main impact on his life: "It became much easier to get grants."

High winds and icing were the main impact in Arkansas.