Through international diplomacy and arbitrage. It however, has a standing army that would be needed in case of a defensive war.
what distinguishes Mexico from other countries
The countries that Mexico owed money to are France, Spain, USA, and England.This is not the answer to "Why did Mexico borrow money from other countries" :/
The United States of America is Mexico's neighbor and is one of the most popular tourist destinations in the world.
Mexico, and other central American countries
No. Since Mexico became an independent nation in 1821, it hasn't tried to conquer or "colonize" other countries.
No. Compare to all other gulf countries Dubai is tourist friendly.
Mexico and Canada
See related questions.
The United States is between Mexico and Canada
None. Mexico is an independent country, and no longer has any territory or overseas possessions.
Maybe about four or more. These countries are: U.S.A., Mexico, Germany, Japan, and other countries.
Any country with an army or militia will send there troops into a conflict or war.