Communist China and quasi-communist Russia have democratic legislative assemblies, too.
Seems to me the difference between democracy and the American republic of 1787 are different in far more than "technical" terms.
Democracy was a dirty word in 1787, yet some also realized that some people, mostly those that owned land, should be involved. Then too there was the Declaration and all that stuff about equality. America gradually became more democratic over the years. We no longer fear democracy and in fact, are proud of having a democratic/republic.
Often quoted is Franklin's response to Mrs. Powel's question, have you given us a monarchy or republic. The word republic has at least two definitions, a representative government or a government that does not have a monarch. The founders gave us both. The USSR was also named as a republic.