Japan was closed for many years a long time ago, who opened up Japan again?

Answer 1

Matthew Perry.

Answer 2

Actually Japan had not been closing 100% then. Japan was open a few ports for several countries.

I think when Japan opened to the world, Japan made a decision by themselves to grab western cultures.

Actually Perry only pressured by an artillery (like a gun of today's American). Japan made a decision opening.
The question "who opened" is rude a bit.

Answer 3

The Portuguese in 1542.

Answer 4

Matthew Perry forced it open by shooting bombs into the harbour. Japan is physically open, but still very behind when it comes to a direct link with overseas (trade, internet banking, language) etc.

Answer 5

In short, Commodore Matthew Perry.

In long...
During the early part of the 17th century, the shogunate suspected that the traders and missionaries were actually forerunners of a military conquest by European powers. This caused the shogunate to place foreigners under progressively tighter restrictions. It monopolized foreign policy, and expelled traders, missionaries, and foreigners, with the exception of the Dutch and the Chinese merchants restricted to the manmade island of Dejima in Nagasaki Bay and several small trading outposts outside the country. However, during this period of isolation (sakoku) that began in 1641, Japan was much less cut off from the rest of the world than is commonly assumed, and some acquisition of western knowledge occurred under the Rangaku system.

Russian encroachments from the north led the shogunate to extend direct rule to Hokkaidō, Sakhalin and the Kuriles in 1807 but the policy of exclusion continued.

The Black Ships (in Japanese, 黒船, kurofune) was the name given to Western vessels arriving in Japan between the 15th and 19th centuries. In particular, it refers to Mississippi, Plymouth, Saratoga, and Susquehanna, that arrived in 1853 at Uraga Harbor (part of present-day Yokosuka) in Kanagawa Prefecture, Japan under the command of United States Commodore Matthew Perry. The word "black" refers to the black color of the older sailing vessels, and the black smoke from the coal-fired power plants of the American ships.

Commodore Perry's superior military force enabled him to negotiate a treaty allowing American trade with Japan, ending a 200-year period in which trading with Japan was only allowed to the Dutch, Chinese and a few other small groups.

The following year, at the Convention of Kanagawa, Perry returned with seven ships and forced the shogun to sign the "Treaty of Peace and Amity", establishing formal diplomatic relations between Japan and the United States. Within five years, Japan had signed similar treaties with other western countries. The Harris Treaty was signed with the United States on July 29, 1858.

Answer 6

Matthew Perry, who then went on to a very successful television career.

Answer 7

http://en.wikipedia.org/wiki/Matthew_Calbraith_Perry