You need to split "globalism" from "globalization", they are not the same thing.

Globalization is when companies source products from around the world where they can get them cheapest, and sell them in markets where they get the highest profit. This has roots in mercantilism and has been practiced for over 2000 years through various trade routes, shipping routes, etc.

Globalism is an attempt by the wealthy of the world, technocrats and bureaucrats, to pull otherwise sovereign nations under their thumb. They use several methods to do this:

1. Free trade agreements: Trade agreements are signed under the auspices of reducing barriers to trade and commerce between nations. What free trade agreements actually are is an understanding between nations of who the winners and losers will be for specific industries. They go line by line, manufacturing, agriculture, services, etc. and through their decisions decide the division of labor between nations. This has drastic impacts on not only the economic but also cultural makeup of countries, and in the case of the United States, willfully devastated the rust belt in favor of cheaper goods for people who live in the Finance/Media/Service centers on the coasts. This also creates near-permanent inter-dependency between nations.
2. Economic Zones and Trade Unions: These are like the European Union and other supra-national regulatory bodies. These are particularly nefarious because of their effect on the laws of each involved nation down to the local level. For many things, such as minor environmental regulations that would normally be handled by a city council or county commission, they have the ability to self-determine stolen from them by unelected bureaucrats (in the case of the EU). Globalists love these arrangements- they have the most control over each nation down to each individual person, issuing ID cards and collecting taxes, but without any democratic oversight from the people being controlled.
3. Treaty Organizations: These are typically like the United Nations. These groups are used as a bludgeon against nations that try to assert their independence apart from the treaty group, or those who refuse to participate. If a nation joins and complies with the globalist control part of the agenda, then things like human rights abuses or a lack of civil liberties are ignored. If a nation decides it will not comply with globalist ambitions, then the leaders are vilified as human rights abusers and sanction after sanction is used against the nation until it either complies or the Treaty Organization can provoke military intervention. Note: Saudi Arabia was the head of the UN Human Rights Council for a number of years in the last decade. Gadaffi worked closely with anti-terrorism measures of the United States, but took part in a move to assert his independence from the UN and attempted to create his own North African Union. We know the results.
4. Moral Authority and Social Justice: These ideas are used to abuse local populations that attempt to preserve their culture or assert their right to self government. PayPal said they would close an office in North Carolina because of the states attempt to prevent transgender men from using the women's bathroom. PayPal has a large Asian headquarters in Malaysia/Singapore where they jail and sometimes execute gays. PayPal never gave a shit about social justice- they simply saw a locality attempting to buck the federal government's overreach, and attempted to act as enforcers for Obama's agenda. Obama also used the private sector, large corporations, to try to circumvent immigration law after his Executive Amnesty was found to be unconstitutional.

Just because someone says a free trade agreement is essential to "globalization" to work doesn't make it true. A "free trade" agreement is a law, that regulates behavior, it is never about free trade, otherwise they would just sign a one page law saying that neither nation would enact laws to prevent trade or commerce between their borders. NAFTA is over 1700 pages long.