Of equal significance are those questions pertaining to the conduct of war. (blog.politics.ox.ac.uk)
American feminism of the 19th century was born of the abolitionist movement, and of equal significance with Friedan's book as impetus for the current women's movement was the experience of women in the civil rights and antiwar protests of the «60s. (religion-online.org)
Of almost equal significance was Michelle Obama's becoming the first black First Lady. (kamwilliams.com)