Amajor failing of the united states government under the articles of confederation was its a) inability to allow the united states to expand. b) inability to regulate commerce among the states. c) failure to defend texas from being annexed by mexico. d) failure to allow the united states to conduct foreign relations.

d is the correct answer.

b is incorrect because it makes food by itself

c is incorrect because us humans don't know how to produce their own food using the sun like plants.

a is incorrect because consumers can depend on carnivores for eating food for consumers to eat the dead organism. same thing with omnivores.

answer; a group made up of people from difference cultures;