Prospa, a Nigerian startup offering software and financial services to entrepreneurs and micro-businesses, closed a $3.8 million pre-seed investment, which was oversubscribed by 380%. The round was backed by venture funds Global Founders Capital and Liquid 2 Ventures. Leading entrepreneurs also participated in the round including Mercury’s Immad Akhund, Ramp’s Karim Atiyeh, Teachable’s Ankur Nagpal, Todd Goldberg and Rahul Vohra’s angel investment fund, and executives from Square, Fac...