Separation of powers is a doctrine of constitutional law under which the three branches of government (executive, legislative, and judicial) are kept separate. This is also known as the system of checks and balances, because each branch is given certain powers so as to check and balance the other branches.
Answer:
A) Free speech can be limited to protect the country.
For agriculture,and China people really favour rice,so if there is no land,there wouldn't be an exact place for them to plant for production of rice.
Their goal was the removal of foreign influence from China.