The problems with the sharecropping system include:
B. Sharecroppers were dependent on landowners.
D. The sharing of profits was not fair.
While competition may have been a factor, the primary issues were the dependency of sharecroppers on landowners and the unfair distribution of profits. The statement "cotton would no longer grow" is misleading, as cotton was still a primary crop during the sharecropping period, even though agricultural practices and market demands changed over time.