<?xml version="1.0" encoding="utf-8" standalone="yes"?><rss version="2.0" xmlns:atom="http://www.w3.org/2005/Atom"><channel><title>Horse Collar on Heltaher</title><link>https://heltaher.com/heltaher/tags/horse-collar/</link><description>Recent content in Horse Collar on Heltaher</description><generator>Hugo -- gohugo.io</generator><language>en</language><copyright>All rights reserved Hisham Eltaher @ heltaher</copyright><lastBuildDate>Sun, 16 Feb 2025 00:00:00 +0000</lastBuildDate><atom:link href="https://heltaher.com/heltaher/tags/horse-collar/index.xml" rel="self" type="application/rss+xml"/><item><title>The Fertility Engine: Agricultural Systems That Built Empires - Part 1: The Heavy Plow: The Tool That Fed Medieval Europe</title><link>https://heltaher.com/heltaher/history-analysis/fertility-engine/post-01/</link><pubDate>Tue, 28 Jan 2025 00:00:00 +0000</pubDate><guid>https://heltaher.com/heltaher/history-analysis/fertility-engine/post-01/</guid><description/></item><item><title>Paths Without Maps: Navigation &amp; Infrastructure Before GPS - Part 4: Harnessing Power: How the Stirrup and Collar Revolutionized Medieval Mobility</title><link>https://heltaher.com/heltaher/systems-innovation/paths-without-maps/post-04/</link><pubDate>Sun, 16 Feb 2025 00:00:00 +0000</pubDate><guid>https://heltaher.com/heltaher/systems-innovation/paths-without-maps/post-04/</guid><description/></item></channel></rss>