The phrase "assembled an organization" is correct and usable in written English.
You can use it when describing the act of bringing together people or resources to form a structured group or entity, typically for a specific purpose.
Example: "After months of planning, she successfully assembled an organization dedicated to environmental conservation."
Alternatives: "formed an organization" or "established an organization."
We had enough money to hire an executive director, who struggled for a year to assemble an organization.
That's how I see what Rees, Tallinn and I want to do in Cambridge (about this kind of technological risk, as about others): we're trying to assemble an organization that will use the combined intellectual power of a lot of gifted people to shift some probability from the bad side to the good.
The approach generated heated debate within the ecological community, and scientists spent several years hashing out the details and assembling an organization, NEON Inc., to manage the project from Boulder, Colorado.
In addition, while Mr. McCain is concentrating his resources in New Hampshire, Mr. Bradley has assembled a national organization.
Taken together, they show how Dr. Khan assembled a far-reaching organization of scientists, engineers and business executives who operated on murky boundaries between the legal and the illegal, sometimes underground but often in plain view, unencumbered by international agreements that prohibit trafficking in nuclear technology.
The wunderkinder and people they recruited spent a year and a half working in complete obscurity, assembling a statewide organization.
Senator Jon S. Corzine is expected to announce tomorrow that he is beginning to assemble a campaign organization to run for governor next year, according to Democrats close to him.
She proved to be a formidable candidate, raising millions of dollars and assembling a campaign organization that aggressively exploited the personal and political baggage of her opponent, Representative John E. Sweeney, who frequently found himself on the defensive.
She proved to be a formidable candidate, raising millions of dollars and assembling a campaign organization that aggressively exploited the personal and political baggage of her Republican opponent, Representative John E. Sweeney, who frequently found himself on the defensive.
