Europe: all about investment
Increased investment is the key to jolting both France and the euro zone back to life, Sapin said.
"Public and private investments in Europe are 18 percent inferior to what they were before the crisis in 2008," he said. "We need to find again the same level of investment in public infrastructures but also private investments in order to modernize factories, to modernize production processes, to have initiatives, innovation, research around new products."
Europe will continue to face difficulty as long as investment levels remain below pre-crisis levels, he added.
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Public infrastructure has been a dominant theme at this year's G-20 summit. Leaders on Sunday endorsed a plan to create a $15 million global infrastructure hub in Sydney to improve the quality of global infrastructure investment.
Meanwhile, European Commission President Jean-Claude Juncker is expected to unveil a 300 billion euro ($375 billion) investment plan before year-end, which could add an additional 0.7 percent of GDP in investment per year over three years.
"[Infrastructure] allows us to stimulate our economy because we start working immediately but also it allows us to deeply modernize our economies in order to allow a better development on the medium and long term," he said. "France is supporting such projects, especially in the euro zone."
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