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Our World in Data@OurWorldInData · Feb 24, 2026 · Line chart

Same-sex marriage legalization

Our World in Data's line chart drew 19.9K views on X: 0.7x its typical post and #112 of 139 Our World in Data charts we track by views. Read Oct 10, 2026.

Almost 40 countries have legalized same-sex marriage, The Netherlands was the first country to legalize same-sex marriage in 2001. Since then, almost 40 other countries have followed suit.

Posted on X by @OurWorldInData (Our World in Data), Feb 24, 2026. Source: x.com · See its data

Why it spread

It spread because it explains itself and rode a hot topic that week, reaching 19,924 views with 576 likes, 73 reposts, 8 quotes and 44 saves.

What worked

  • The post explains itself, so a reader understands the chart without extra context.
  • It rode a hot topic that week, which gave the chart a reason to travel.
  • It is self labelling and branded, and it shows a source line, so the chart carries its own meaning and credit.

What to borrow

We could take a running count over time and pair it with a plain sentence that states the milestone, then label the chart clearly and keep our source line visible.

Careful

Do not over read the quote rate, which sits in the bottom quarter, and do not treat the source reach in the top quarter as proof that the design alone drove the spread.

Written by our analysis model from the measured numbers above, not by Our World in Data.

Make it yours

Your numbers, in this line chart.

Starts from the real numbers of "Same-sex marriage is now legal in 39 countries" by Our World in Data. Replace every number with yours before you post. Make one like this, step by step

Free pictures carry a small "Made with ViralChart" line. That line is how other people find us.

API · Max

Use this chart via API

On the Max plan you can pull this chart's numbers with the provenance of each one, as JSON or CSV, with its redraw spec, or call it from an agent over MCP. Chart id 966f2e70d75c.

PathReturnsPlan
GET/api/v1/charts/966f2e70d75cTitle, publisher, date, form, point count; with a Max key, the data linkOpen
GET/api/v1/charts/966f2e70d75c/dataEvery point with its provenance and confidence, plus the redraw spec. Add ?format=csv for CSVMax
GET/api/v1/charts/966f2e70d75c/render?view=1The draw-only view this page usesOpen
POST/mcpTool get_chart_data with this id, for Claude, Cursor and other agentsMax
curlMax
curl -s https://viral-chart.com/api/v1/charts/966f2e70d75c/data \
  -H "Authorization: Bearer $VIRALCHART_KEY"
Claude CodeMax
claude mcp add --transport http viralchart https://viral-chart.com/mcp \
  --header "Authorization: Bearer $VIRALCHART_KEY"

60 requests a minute per key; over that you get 429 with Retry-After. Up to 5 keys per account, made on your account page and shown once. Without Max, the data route answers 402 with a link to the plans. The numbers describe a chart its publisher owns, and every file carries a license note.

More from Our World in Data

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Questions people ask

How far did Our World in Data's "Same-sex marriage legalization" chart travel?

19,924 views, 576 likes, 73 reposts and 44 saves on X, read Oct 10, 2026. A normal post from @OurWorldInData gets about 28.6K views.

What kind of chart is it?

A line chart. Number of countries legalizing same-sex marriage over time.

Can I use Our World in Data's chart?

Use the format, not the picture. The chart, logo and design belong to Our World in Data. ViralChart redraws the chart type with your numbers and words, and credits the original publisher.