“…Based on Feiock's research (Feiock, 2004, 2007, 2009, 2013; Feiock et al, 2017), which revealed relationships among key variables of ICA, other studies have been conducted in various areas, including economic development (Chen et al, 2016; Hawkins & Andrew, 2010; Lee et al, 2012; Park & Feiock, 2006; Percoco, 2016), the environmental arena (Gerber et al, 2013; Yi et al, 2018), and emergency policies (Wilson, et al 2020). Benefits of IMC are likely to be captured in the capital‐intensive service areas of firefighting and sanitation, which require the collaboration of small municipalities that have difficulty making large capital investments (Baba & Asami, 2020).…”