After elections this weekend, Europe's next parliament has a tough job ahead, with a number of issues posing a serious risk to the economic and political union.
There's an increase in anti-EU sentiment – at a time while many are calling for more European integration – and growing concerns about the region's sluggish recovery, as businesses continue to struggle.
The 751 newly elected Members of European Parliament (MEPs) will represent over 500 million people across the European Union (EU)'s 28 member states – and this scope gives rise to plenty of disagreements.
So what are the key issues facing the European Parliament?
1. Euroskepticism
Euroskepticism – or anti-EU sentiment – appears to have spread across Europe rapidly, fueled by anger at the euro zone crisis and the tough austerity measures introduced as a result.
Read MoreEuro zone economy loses steam as France lags
In these elections, the number of euroskeptic MEPs rose 19 percent to 143 seats, according to Sunday night projections. Anti-EU parties came first in France, the United Kingdom, Greece and Denmark, among other member states. The scale of the victory in France in particular came as a surprise, with more than 25 percent of the vote going to the Front National led by Marine Le Pen.
This rise in the number of anti-EU MEPs means that a large chunk of the European Parliament now actively wants its abolition.
"A polarized parliament is concerning because it doesn't offer what most voters want," Mats Persson, director of the Open Europe think tank, told CNBC.
"People generally want a middle way between 'no Europe' and 'all Europe'. They want less EU, but a better EU – and that choice is denied if it becomes polarized."
There could also be a market impact, according to Bank of America Merrill Lynch analysts Ruben Segura-Cayuela and Laurence Boone, who warned of an increase in fragmentation across European institutions.
"In our view, this situation may prevent further integration and, more importantly, provide no current clear sense of direction, which, in turn, may weaken economic policies and create further complications for financial market regulation," they wrote in a note.
But it's not all bad news, according to Persson, who argues there will be clear incentives for the pro-European MEPs to "huddle up and freeze out the anti-EU contingent."
"If anything, the European Parliament might become more integrationist than it currently is," he added.
2. Sluggish growth
Growth figures published earlier this month put paid to any notion that Europe's economic recovery was gaining any serious momentum.
Read MoreMediterranean stocks plummet as GDP disappoints
Across the EU, gross domestic product (GDP) rose by 0.3 percent during the first three months of the year, while the euro zone economy expanded by just 0.2 percent. Some Mediterranean countries performed especially badly, with a contraction in Italy, Cyprus and Portugal's economies.
"Last week's bleak first-quarter GDP figures have pulled the rug out from under the euro zone's so-called recovery," Nicholas Spiro, managing director of Spiro Sovereign Strategy, said in a note.
"The election is being held at a time when the euro zone is stumbling on the road to recovery, reform fatigue has set in (and) the governance of the bloc remains a shambles."
This disappointing data puts added pressure on Brussels, which is often blamed for economic malaise, despite the fact that most responsibility for taxation and spending lies with national governments.
"Brussels will inevitably struggle to play a key role," Persson said, but highlighted one area where the European Parliament could have a tangible impact.
"Where's growth going to come from? Brussels could help to maximize the potential of the single market – it's the key growth-generating tool the EU has at its disposal."
3. Business woes
Inherently linked to the performance of Europe's economy is the strength of its businesses, but firms across the region have had a hard time of it since the debt crisis hit.
Tough fiscal tightening programs have hit consumer spending and businesses have also been battling with a strong euro which makes exports more expensive on the global market. Last week, data revealed that business activity in the euro zone lost steam in May.
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Arnaldo Abruzzini, secretary-general of Eurochambres, which represents around 20 million businesses across Europe, identified one issue that continues to plague European businesses: access to funding.
Lending is a sign of a buoyant economy, but loans to both businesses and households continued to fall in March.
"It is not improving, firstly because of the sclerotic approach to the banking sector," he told CNBC.
"On one hand we ask banks to recapitalize to make them more solid; on the other hand we ask banks to continue to give loans to small business – which have a high risk ratio."
He called on Brussels to implement further divisions in the banking sector, separating banks' commercial and investment banking arms to encourage more lending.
A reduction in regulation would also give business a boost, according to Persson, and could easily be addressed by the next European Parliament.
"There's still far too much red tape," he said. "Brussels could instantly improve its reputation – and help business – by giving firms more breathing room."