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Read the article titled "What Is Trafficking in Persons?" According to the US State Department, what is human trafficking, and what major forms of it are seen around the globe?

Human trafficking is an illegal activity which includes, among others, trafficking of children, trafficking of women (usually for the purpose of prostitution or adult-content videos), or trafficking of human body organs, that is, parts of living or dead people. These practices are illegal in the vast majority of countries around the world and are usually also considered a serious crime. This criminal activity is often linked to other forms and types of crime, such as smuggling or the illegal trade in drugs, weapons, etc.

Its occurrence is supported by imbalances in international economic relations, poverty, tolerance of human rights violations and political instability in countries of origin. It is often a form of transnational crime. The move often goes from developing countries to industrialized countries or from rural to urban places. It is estimated that there are between 0.6 and 4 million people who are trafficked every year in the world. Trafficking victims often end up in parallel societies that are hidden from the public's view, which makes interference with the victims' situation difficult, and which leads to slave-like conditions where victims are deprived of all legal protection.

union blockade

explanation:

the union blockade in the american civil war was a naval strategy by the united states to prevent the confederacy from trading.

the blockade was proclaimed by president abraham lincoln in april 1861, and required the monitoring of 3,500 miles (5,600 km) of atlantic and gulf coastline, including 12 major ports, notably new orleans and mobile. those blockade runners fast enough to evade the union navy could only carry a small fraction of the supplies needed. they were operated largely by british citizens, making use of neutral ports such as havana, nassau and bermuda. the union commissioned around 500 ships, which destroyed or captured about 1,500 blockade runners over the course of the war.

the answer should be a. the sui empire, the tang empire extended from korea in the west to manchuria in the east.