(Sorry, it is a slightly snarky request, and I smirkingly accept, that you might be the only L voter in these rows)
(c) Sometime, in the past, I posted links that gave three different perspectives in favor of free trade (i) liberal (minority view, even though Bill Clinton signed and Dems voted for NAFTA), (ii) conservative (majority view, even though Pat Buchanan and others oppose it), (iii) libertarian (overwhelming view).
You can check back at my comments and find out, if you are interested.
(d) My short answer for free trade is simple: Let Africa and Latin America and Asia (large part) live in the industrial and agricultural age, and let's move to the information age (space, biotech, nanotech, genetic engineering, health care, internet, etc). Most people in these industries will make a lot more money than if they worked in metallurgy or meat factories.
It also means that education (and creative thinking) will become more important because we live in the information age.
Building and providing houses, pension, 13th Salary at Christmas, cheap holidays, sports facilities, medical facilities.
A tradition that used to be very strong in Germany - introduced not by the state, but by the industrialists themselves.