seodata.dev

keyword

why did the second world war start

Monthly search volume and cost-per-click data for "why did the second world war start" in US.

$ curl "https://app.seodata.dev/v1/keyword?q=why+did+the+second+world+war+start&country=us" +--------------+------------------+ | volume | 12,100 | | cpc | $0 | | competition | 0 | | country | US | | updated | 2026-06-13 | +--------------+------------------+

# related keywords

Keywords with overlapping search results, ranked by SERP similarity.

keyword volume cpc overlap
world war second 165,000 $4.61 20/20
when did the second world war start 90,500 $7.91 20/20
when did world war 2 start 90,500 $7.91 20/20
when was ww2 60,500 $8.43 20/20
when was world war 2 49,500 $0 20/20
how did the world war 2 start 12,100 $3.44 20/20
what started world war 2 12,100 $0 20/20
why did world war 2 start 12,100 $0 20/20
why did ww2 start 12,100 $0 20/20
why did wwii start 12,100 $0 20/20

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=why+did+the+second+world+war+start&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