If all countries choose same policy for trade its called free trade among countries no any further restriction or a policy for other countries , so we this free trade have both pros and cons for economic standpoint which are as follow:-

Free trade agreements are treaties that regulate the tariffs, taxes, and duties that countries impose on their imports and exports. The most well-known U.S. regional trade agreement is the North American Free Trade Agreement.1The advantages and disadvantages of free trade agreements affect jobs, business growth, and living standards:

• free trade agreements are contracts between countries to allow access to their markets.
• FTAs can force local industries to become more competitive and rely less on government subsidies.
• They can open new markets, increase GDP, and invite new investments.
• FTAs can open up a country to degradation of natural resources, loss of traditional livelihoods, and local employment issues.
• Countries must balance the domestic benefits of free trade agreements with their consequences.

  Six Advantages/pros

  1) Free trade agreements are designed to increase trade between two or more countries. Increased international trade has the following six main advantages:

• Increased Economic Growth: The U.S. International Trade Commission estimated that NAFTA could increase U.S. economic growth by 0.1%-0.5% a year.
• More Dynamic Business Climate: Without free trade agreements, countries often protected their domestic industries and businesses. This protection often made them stagnant and non-competitive on the global market. With the protection removed, they became motivated to become true global competitors.
• Lower Government Spending: Many governments subsidize local industries. After the trade agreement removes subsidies, those funds can be put to better use.
• Foreign Direct Investment: Investors will flock to the country. This adds capital to expand local industries and boost domestic businesses. It also brings in U.S. dollars to many formerly isolated countries.
• Expertise: ?Global companies have more expertise than domestic companies to develop local resources. That's especially true in mining, oil drilling, and manufacturing. Free trade agreements allow global firms access to these business opportunities. When the multinationals partner with local firms to develop the resources, they train them on the best practices. That gives local firms access to these new methods.
• Technology Transfer: Local companies also receive access to the latest technologies from their multinational partners. As local economies grow, so do job opportunities. Multi-national companies provide job training to local employees.

Seven Disadvantages/cons

1. Increased Job Outsourcing: Why does that happen? Reducing tariffs on imports allows companies to expand to other countries. Without tariffs, imports from countries with a low cost of living cost less. It makes it difficult for U.S. companies in those same industries to compete, so they may reduce their workforce. Many U.S. manufacturing industries did, in fact, lay off workers as a result of NAFTA. ??One of the biggest criticisms of NAFTA is that it sent jobs to Mexico.
2. Theft of Intellectual Property: Many developing countries don't have laws to protect patents, inventions, and new processes. The laws they do have aren't always strictly enforced. As a result, corporations often have their ideas stolen. They must then compete with lower-priced domestic knock-offs.?
3. Crowd out Domestic Industries: Many emerging markets are traditional economies that rely on farming for most employment. These small family farms can't compete with subsidized agri-businesses in the developed countries. As a result, they lose their farms and must look for work in the cities. This aggravates unemployment, crime, and poverty.
4. Poor Working Conditions: Multi-national companies may outsource jobs to emerging market countries without adequate labor protections. As a result, women and children are often subjected to grueling factory jobs in sub-standard conditions.
5. Degradation of Natural Resources: Emerging market countries often don’t have many environmental protections. Free trade leads to depletion of timber, minerals, and other natural resources. Deforestation and strip-mining reduce their jungles and fields to wastelands.
6. Destruction of Native Cultures: As development moves into isolated areas, indigenous cultures can be destroyed. Local peoples are uprooted. Many suffer disease and death when their resources are polluted.
7. Reduced Tax Revenue: Many smaller countries struggle to replace revenue lost from import tariffs and fees

By adopting some way we try resolve this issue as well

Trade protectionism is rarely the answer. High tariffs only protect domestic industries in the short term. In the long term, global corporations will hire the cheapest workers wherever they are in the world to make higher profits.A better solution than protectionism is the inclusion of regulations within trade agreements that protect against the disadvantages.Developed economies can reduce their agribusiness subsidies, keeping emerging market farmers in business. They can help local farmers develop sustainable practices. They can then market them as such to consumers who value that. Countries can insist that foreign companies build local factories as part of the agreement. They can require these companies to share technology and train local workers.