The correct answer to this open question is the following.
Two challenges faced by early inhabitants of Louisiana were the heavy rains due to the weather conditions in the zone of the Gulf of México, and the constant flooding of the Mississippi River or the Ouachita River in Northern Louisiana, which caused destruction to the early inhabitants of Louisiana.
They overcome these challenges by learning better agriculture techniques that took advantage of the flooding of the rivers and the fertile soil left by this phenomenon. They also constructed impressive places and buildings for that time, as was the case of the oldest mound complex known in the United Staes: Watson Brake, close to modern-day Monroe, Louisiana.