On May 5th, 1818, Karl Marx, hero of the international proletatiat, was born. His revolution of Socialist theory reverberates throughout the world carries on to this day, in increasing magnitude. Every passing day, he is vindicated. His analysis of Capitalism, development of the theory of Scientific Socialism, and advancements on dialectics to become Dialectical Materialism, have all played a key role in the past century, and have remained ever-more relevant throughout.
He didn't always rock his famous beard, when he was younger he was clean shaven!
Some significant works:
Economic & Philosophic Manuscripts of 1844
The Eighteenth Brumaire of Louis Bonaparte
Critique of the Gotha Programme
Manifesto of the Communist Party (along with Engels)
And, of course, Capital Vol I-III
Interested in Marxism-Leninism, but don't know where to start? Check out my "Read Theory, Darn it!" introductory reading list!
Is it? I'm pretty sure private property and ownership was a thing in the middle ages. People selling stuff to make a living, merchants... Isn't the oldest known text some babylonian dude complaining about the faulty products of a merchant?
Free market trade has existed and changed shape throughout most of human history. Advice with how to deal with it is in the Old Testament. how often or consistent it revolved around a common currency is/was constantly changing, though
For most of human history (tribal / pre-agricultural societies), markets were rare and mostly unecessary. Small groups of people survived by foraging / hunting for food and sharing it among themselves. Usually elders, or some type of communal decision-making process was how food was distributed. Sharing, not trade, was the distribution system.
You can have some trade in tribal / feudal societies, but it isn't the most common way that goods are distributed.