Which of the following best describes the government of the Roman Republic? A.
Their form of government was largely weak and ineffective.
B.
Their form of government was the first one to have democratic principles.
C.
Their form of government is not relevant to the governments of today.
D.
Their form of government has influenced the democratic governments of today.

Correct answer is D.  Their form of government has influenced the democratic governments of today.

Explanation:

Option A is not correct as government was far from weak, and government managed to strengthen the authority of the country and to create one of the strongest countries in history.

Option B is not correct as democratic principles existed even before, for example in Athens.

Option C is not correct as it is very relevant, and a large number of countries today have adapted their systems according to the systems of Roman republic.

Option D is correct as many countries, as we have said, for example United States have created their governments according to what existed in Roman Republic.

d. she conquered the black sea coast and parts of poland.