'a more significant reason' is a correct and usable phrase in written English.
You can use it to compare two reasons for something, or to emphasize one reason in particular. For example, you might say, "I chose to buy the car because of its features, but a more significant reason was its price."
Others, including some supporters of the bill, said that a more significant reason for those mergers was the huge trade deficits run by the United States, which flood the rest of the world with dollars that are being used by overseas investors to buy American corporate assets.
But there's a more significant reason a second Kent State would be unlikely -- protest has moved online.
Madison and Jefferson also opposed the bank bill; however, the potential of the capital not being moved to the Potomac if the bank was to have a firm establishment in Philadelphia (the current capital of the United States) was a more significant reason, and actions that Pennsylvania members of Congress took to keep the capital there made both men anxious.
In the 1980s, Schneider began to reappear in films, more as an icon from the Last Tango days than for any more significant reason.
But these programs are flourishing for a possibly more significant reason: We are experiencing a deep crisis in narrative.
However, a second more significant reason can be established by referring back to the observations on the correlation factors f 1−3.
While these factors have contributed to the sudden popularity of soccer in the U.S., I believe that there is a far more significant reason why the country is captivated by these women, and it serves as an important reminder to us about our priorities and goals in life.
In addition to the limited impact on companies' bottom lines, though, there is another, more structural and perhaps more significant, reason why the political and public jousting is unlikely to result in real damage.
"A&E moved to a brand new building six weeks ago so we're asking, is it people just turning up to see the new department or is it any other more significant reason?" The new A&E department opened on the UHNS City General site in March and occupies half of one of the six floors of the new £400m facility.
The more significant reason for divergence between urban and rural public insurance was the premium-setting policy.
