The phrase "it has manifested itself" is correct and usable in written English.
Example sentence: After months of hard work, success has manifested itself in the form of increased profits for the business.
It has manifested itself just about everywhere in the developed world since the late 1970s, and for the same two reasons.
It has manifested itself throughout this year: in the backlash against the Western news media for its coverage of the Tibetan conflict, in brawls between pro- and anti-China demonstrators as the Olympic torch relay passed through foreign cities, in the surge of volunteerism during the May earthquake, and in the rush to make Beijing presentable to the world before the Olympics.
How has this trend manifested itself and what are the consequences for the quality of policing?Mr Balko: The most obvious way it has manifested itself is in the explosion in the use of SWAT teams and similar paramilitary police units over the last 25 years.
The underlying dispute over the sovereignty of the territory has continued for centuries, but in the last couple of years it has manifested itself in the form of a clash over fishing rights.
It goes deeper than that – it has manifested itself in muscle tissue.
On the Left it has led to anger at the excesses of the global capitalist system and the rise of populists such as Bernie Sanders and Jeremy Corbyn, while on the Right it has manifested itself in scapegoating of foreigners, especially migrants seen as 'stealing' jobs that should go to locals.
This fear, it seems, has manifested itself in a newly punctilious approach to documentation.
But he has little reason to bother with it when his bounce has manifested itself more clearly in most of the other swing states, and when those states sufficiently provide a myriad number of ways for him to reach 270 electoral votes.
It is a problem that has manifested itself on the street as well.
It goes deeper than that it has manifested itself in muscle tissue.
"It has been a remarkable change in the attitude of the voting public that has manifested itself in the House as a whole.
