Answer: make changes in (something, typically a social, political, or economic institution or practice) in order to improve it.
Explanation: Reform means the improvement or amendment of what is wrong, corrupt, unsatisfactory, etc. The use of the word in this way emerges in the late 18th century and is believed to originate from Christopher Wyvill's Association movement which identified “Parliamentary Reform” as its primary aim.
The Mexican Cession happened in 1848. In this treaty, Mexico handed over Texas to the US. Hope this helps.
In 1511 Albuquerque captured Malacca; from this he could control the trade from the East Indies and the coast of China.
