Direct democracy would be extremely costly because people would have to vote on every single thing and this would cost time and money to ensure everyone has voted. It couldn't be resolved in early times, but maybe with the age of technology you could surpass that by having everyone vote online or something similar.
Roe v. Wade was the court case
American colonists. Its easy really.
C. who should be Muhammad's successor
Explanation:
The two sects disagree over who should be the Khalifa and by extension the ruler of the caliphate after the death of prophet Muhammad. T<u>he Sunnis were the ones that lobbied for the four consecutive Khalifas starting with Abu Bakr while the Shias firmly advocated for Ali ibn e Talib.</u>
This case was the real divide that formed the two most important sects of Islam which is the Sunni and the shia.
D, I'm pretty sure it's D