Sultan Iskandar Syah set up a systemic government

Malacca imposed an affordable tax

The government provided basic needs such as food, water and a place to stay for the foreign traders

Strong diplomatic relations with China

A lot of money

Marriage ties between the Sultan and the princess

A yellow umbrella, an official stamp, and a pair of clothing

Through the marriage of the Sultan with Princess Pasai

Traders from Arab and India spreading the religion in Malacca

Through spice trade from Arab countries

Other religion are not that attractive for the locals

The tax system is too low, which caused traders to go to Acheh, Patani and Brunei instead because the economy is not good

The leaders were too weak/old and were ill, there were favoritism in the leadership, and bribery were rampant.

The sultans were not from royal blood

The Chinese Peranakan Princess

Daughter of Laksamana Cheng Ho, marrying Sultan Mansur Shah

Daughter of Emperor of China, marrying Sultan Mansur Shah