Exhibit 77M

ITEM 77M/77Q1(G) - MERGERS:

The series of Columbia Acorn Trust listed in the table below in the column
captioned "Acquiring Fund" (the "Acquiring Fund") became the surviving entity
in a reorganization (the "Reorganization") with the two series of RiverSource
International Managers Series, Inc. listed next to it under the column of the
table below captioned "Acquired Fund" (the "Acquired Fund"):



                   ACQUIRED FUNDS                             ACQUIRING FUND
                   --------------                             --------------
                                                    
RiverSource Partners International Select Growth Fund  Columbia Acorn International
RiverSource Partners International Small Cap Fund


In November 2010, the Board of Directors of RiverSource International Managers
Series, Inc. and in May 11, 2011, the Board of Trustees of Columbia Acorn Trust
each approved an agreement and plan of reorganization (the "Agreement and
Plan") providing for the sale of all of the assets of the Acquired Funds to,
and the assumption of all of the liabilities and obligations of the Acquired
Funds by, the Acquiring Fund, in complete liquidation of the Acquired Funds. At
a special meeting of shareholders held on April 27, 2011, shareholders of
RiverSource Partners International Small Cap Fund and shareholders of
RiverSource Partners International Select Growth Fund approved the Agreement
and Plan with respect to the Reorganization.

Effective on August 12, 2011, the Acquiring Fund acquired all the assets of,
and assumed all the liabilities and obligations of the Acquired Funds in
complete liquidation of the Acquired Funds. Shareholders of each class of
shares of the Acquired Funds received shares of the corresponding share class
of the Acquiring Fund in accordance with the Agreement and Plan.

The registration statement of Columbia Acorn Trust on behalf of Columbia Acorn
International, on Form N-14, which was filed with the Securities and Exchange
Commission on November 16, 2010 (ACCESSION NO. 0001193125-10-261888) is
incorporated by reference, including without limitation the Agreement and Plan
filed as Exhibit (4) to the registration statement and the applicable
prospectus/proxy statement describing the applicable Reorganization.