The most senior US official to visit Taiwan in 25 years, Ms. Pelosi, stated that her group was there to "unequivocally clear" the island that the US would not "abandon" it.
The US would "pay the price" for Ms. Pelosi's visit, China has already warned
Although Taiwan is independent, China regards it as a separatist province that will one day reunite with it.
According to Ms. Pelosi, who was referring to the Taiwan Relations Act, "America made a vow to always stand with Taiwan... today our team came to Taiwan to make it unambiguously clear we will not abandon our commitment to Taiwan."
Taiwan has emerged as another another hotspot amid recent escalating hostilities and abrasive rhetoric between Washington and Beijing, with the US treading carefully on the diplomatic line.
Because of its adherence to the "One China" policy, which recognises only one Chinese government, the US maintains formal links with Beijing and not Taiwan. This stance is a cornerstone of the two nations' diplomatic relationship. However, it also keeps up a "strong unofficial" connection with the island. That includes providing Taiwan with guns for self-defense.