First of all, I want to thank my parents, Vera and Pompeu, who always supported me and encouraged me to achieve higher goals. Thank you for being these inspirational figures. I am thankful for all the patience, love and care from Rilari. I would also like to thank my advisor and co-advisor, Ruy and Walter. Your guidance was essential in order to get this work done. All the knowledge, inside and outside the classroom, you helped me to acquire is priceless, and I will always be thankful for that. I also appreciate the resourceful conversations I had with Márcio Garcia, Vinícius Carrasco, and Diogo Guillen: you inspired me to become a better economist. I cannot forget the friends I've made during these two long years and with whom I shared unforgettable moments: all you guys who joined the master with me, you inspired me to become better. Particularly, I am grateful for the meaningful friendships that were forged during these years: Matheus D'amico, Iuri Holanda, Yan Moreira and Henrique Fernandes, you've made it easier. Long days, short nights. It was worth it.