The answer is d) The US and USSR
The Sino-Soviet Split was a pivotal historical event which took place over the course of a few years between 1956-1966.
The post-Stalinist Soviet Union diverged from China's own communist, Marxist and Leninist views.
The split was followed by an economic agreement between the United States and the USSR.
However, the effects of this split were felt far and wide all over the world and for many years to come.
In the next decade, China took steps to officially open to the United States with Nixon's state visit to the country.
Own a slave in The US, and buy or sell slaves.
A unitary system of government is a monarchy. Which means that the country is ruled by one person or a group of people. An example of a unitary system is a country that is run by a royal family, that consists of kings and queens.
A federal system is a system is a system of government that is run but not ruled by a government that has many different political parties and many different people. The United States is an example of a federal system.
C. is my answer and thinkin to