SOFIA (Reuters) – Bulgaria’s government on Friday approved a plan to join the euro zone as of Jan. 1, 2024, amid concerns within the ruling coalition over the lack of detailed analysis on the impact of the move. Political uncertainty and three elections last year delayed the plan, drafted after Bulgaria was admitted together with Croatia to the ERM-2 mechanism, a mandatory stage for joining the euro in 2020. [L2N2OC1PM] The European Union’s poorest member, which already pegs its lev currency to the euro, has pledged to adopt the single currency at its current fixed rate in 2024. “Bulgaria has,…