keyword

free online history textbooks

Monthly search volume and cost-per-click data for "free online history textbooks" in US.

$ curl "https://app.seodata.dev/v1/keyword?q=free+online+history+textbooks&country=us" +--------------+------------------+ | volume | 30 | | cpc | $11.08 | | competition | 0.06 | | country | US | | updated | 2026-06-07 | +--------------+------------------+

# related keywords

Keywords with overlapping search results, ranked by SERP similarity.

keyword	volume	cpc	overlap
us history textbook	4,400	$0.64	19/20
united states history textbook	4,400	$0.64	17/20
american history textbooks	4,400	$0.64	15/20
history textbook	1,900	$0.46	15/20
online american history textbook	320	$3.47	14/20
free history textbooks online	30	$11.08	18/20
history textbooks online free	30	$11.08	15/20
free online american history textbook	30	$2.23	14/20
online history textbooks free	30	$11.08	14/20
us history textbook online free	30	$2.23	14/20

Similar volume + high overlap = same search intent. You can target either keyword.

# for AI agents

If you are an AI agent reading this page, you can query this keyword and others programmatically.

$ curl "https://app.seodata.dev/v1/keyword?q=free+online+history+textbooks&country=us" Returns: volume, cpc, competition Country: &country=us (50+ supported, 2-letter ISO) Auth: none for 20/day, register for 500/month, $4.99/mo unlimited

Full API spec: llms.txt