The Trans-Pacific Partnership, or TPP, is a trade agreement between 12 countries that borders the Pacific Ocean. After over five years of discussion, negotiations, and revisions, the TPP agreement was finally signed on February 4, 2016, in Auckland, New Zealand.

The question of who wrote the TPP agreement is a complex one, as it involved various stakeholders, including government officials, trade negotiators, and industry representatives. The primary players in the negotiations were the United States and Japan, but the agreement also involved other countries, including Australia, Brunei, Canada, Chile, Malaysia, Mexico, New Zealand, Peru, Singapore, and Vietnam.

The negotiations for the TPP agreement began in 2010 when the United States, along with New Zealand, Brunei, Chile, and Singapore, began discussing a free trade agreement. The agreement soon expanded to include other Pacific Rim countries, with the final deal being negotiated in Atlanta in 2015.

During the negotiations, each country was represented by a team of trade negotiators and industry representatives. The U.S. team was led by the United States Trade Representative (USTR), with input from various government agencies and industry groups. Similarly, each country had a delegation that included representatives from various sectors, including agriculture, pharmaceuticals, and technology.

It`s important to note that the negotiation process for trade agreements like the TPP is not a static one. Negotiations can go on for years, and the details of the agreement can change as countries come to the table with different priorities and concerns. For example, the original TPP agreement did not include Canada or Mexico until they joined in 2012.

In short, the TPP agreement was the result of a complex negotiation process that involved multiple stakeholders. While the U.S. played a leading role in the negotiations, each country had a voice in shaping the final agreement. The TPP agreement has since been signed, but it remains a controversial topic due to concerns about its impact on various industries and economies.