We use long-run census data to understand the scale of recent US migration trends, and how these compare to previous centuries.<br><br><a href="https://ourworldindata.org/how-high-is-current-immigration-to-the-united-states-in-historical-perspective"><img src="https://ourworldindata.org/cdn-cgi/imagedelivery/qLq-8BTgXU8yG0N6HnOy8g/62f7240d-9892-4f63-792f-233662d7e800/w=1024"/></a>

How elections spread, voting rights expanded, and political competition developed around the world over the last two centuries.<br><br><a href="https://ourworldindata.org/the-rise-of-electoral-democracy"><img src="https://ourworldindata.org/cdn-cgi/imagedelivery/qLq-8BTgXU8yG0N6HnOy8g/8bb8ce32-4bbc-487c-e8bf-4ca148339a00/w=1024"/></a>

According to a UN report published last year, there are 138 million children in child labor. In this article, we look at what this estimate exactly captures.<br><br><a href="https://ourworldindata.org/138-million-children-are-in-child-labor-what-does-this-actually-mean"><img src="https://ourworldindata.org/cdn-cgi/imagedelivery/qLq-8BTgXU8yG0N6HnOy8g/564b02f9-4455-4334-12ce-94a4583fde00/w=1024"/></a>

Learn how inequality is measured, who produces key databases, and what the data tells us.<br><br><a href="https://ourworldindata.org/we-published-a-new-topic-page-on-economic-inequality"><img src="https://ourworldindata.org/cdn-cgi/imagedelivery/qLq-8BTgXU8yG0N6HnOy8g/8572fbf8-1c9c-4176-a865-12735e86a000/w=1024"/></a>

Explore how populations are distributed across settlement types, which cities are growing fastest, what living conditions in urban areas look like, and much more.<br><br><a href="https://ourworldindata.org/we-have-a-new-urbanization-topic-page"><img src="https://ourworldindata.org/cdn-cgi/imagedelivery/qLq-8BTgXU8yG0N6HnOy8g/a57ed482-5955-4a15-01c2-fc5092c4ac00/w=1024"/></a>

Almost all countries have ended large-scale forced labor, often surprisingly recently.<br><br><a href="https://ourworldindata.org/slavery"><img src="https://ourworldindata.org/cdn-cgi/imagedelivery/qLq-8BTgXU8yG0N6HnOy8g/fd9c3fb5-e863-48e5-d6df-a67fbf9e5000/w=1024"/></a>

What share of the world is religious, and how is this changing? Explore global data and research on trends in religiosity.<br><br><a href="https://ourworldindata.org/religion"><img src="https://ourworldindata.org/cdn-cgi/imagedelivery/qLq-8BTgXU8yG0N6HnOy8g/d55e9c17-481a-4aab-81f7-3ee627dce800/w=1024"/></a>